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Author | Zhu, W.; Van Tendeloo, M.; Xie, Y.; Timmer, M.J.; Peng, L.; Vlaeminck, S.E. | ||||
Title | Storage without nitrite or nitrate enables the long-term preservation of full-scale partial nitritation/anammox sludge | Type | A1 Journal article | ||
Year | 2022 | Publication | The science of the total environment | Abbreviated Journal | Sci Total Environ |
Volume | 806 | Issue | 3 | Pages | 151330 |
Keywords | A1 Journal article; Sustainable Energy, Air and Water Technology (DuEL) | ||||
Abstract | Bioaugmentation with summer harvested sludge during winter could compensate for bacterial activity loss but requires that sludge activity can be restored after storage. This study assesses the effect of temperature and redox adjustment during the storage over 180 days of partial nitritation/anammox (PN/A) granular resp. floccular sludge from potato processing resp. sludge reject water treatment. Anoxic storage conditions (in the presence of nitrite or nitrate and the absence of oxygen) resulted in a loss of 80-100% of the anammox bacteria (AnAOB) activity capacity at 20 degrees C and 4 degrees C, while anaerobic conditions (without oxygen, nitrite, and nitrate) lost only 45-63%. Storage at 20 degrees C was more cost-effective compared to 4 degrees C, and this was confirmed in the sludge reactivation experiment (20 CC). Furthermore, AnAOB activity correlated negatively with the electrical conductivity level (R-2 > 0.85, p < 0.05), so strong salinity increases should be avoided. No significant differences were found in the activity capacity of aerobic ammonia-oxidizing bacteria (AerAOB) under different storage conditions (p > 0.1). The relative abundance of dominant AnAOB (Candidatus Brocadia) and AerAOB genera (Nitrosomonas) remained constant in both sludges. In conclusion, preserving PN/A biomass without cooling and nitrite or nitrate addition proved to be a cost-effective strategy. (C) 2021 Elsevier B.V. All rights reserved. | ||||
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Publisher | Place of Publication | Editor | |||
Language | Wos | 000740216300013 | Publication Date | 2021-10-28 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0048-9697 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor ![]() |
9.8 | Times cited | Open Access | OpenAccess | |
Notes | Approved | Most recent IF: 9.8 | |||
Call Number | UA @ admin @ c:irua:185447 | Serial | 7213 | ||
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Author | Gogoi, A.; Neyts, E.C.; Milošević, M.V.; Peeters, F.M. | ||||
Title | Arresting aqueous swelling of layered graphene-oxide membranes with H3O+ and OH- ions | Type | A1 Journal article | ||
Year | 2022 | Publication | ACS applied materials and interfaces | Abbreviated Journal | Acs Appl Mater Inter |
Volume | 14 | Issue | 30 | Pages | 34946-34954 |
Keywords | A1 Journal article; Engineering sciences. Technology; Condensed Matter Theory (CMT); Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | Over the past decade, graphene oxide (GO) has emerged as a promising membrane material with superior separation performance and intriguing mechanical/chemical stability. However, its practical implementation remains very challenging primarily because of its undesirable swelling in an aqueous environment. Here, we demonstrated that dissociation of water molecules into H3O+ and OH- ions inside the interlayer gallery of a layered GO membrane can strongly affect its stability and performance. We reveal that H3O+ and OH- ions form clusters inside the GO laminates that impede the permeance of water and salt ions through the membrane. Dynamics of those clusters is sensitive to an external ac electric field, which can be used to tailor the membrane performance. The presence of H3O+ and OH- ions also leads to increased stability of the hydrogen bond (H-bond) network among the water molecules and the GO layers, which further reduces water permeance through the membrane, while crucially imparting stability to the layered GO membrane against undesirable swelling. KEYWORDS: layered graphene-oxide membrane, aqueous stability, H3O+ and OH- ions, external electric field, molecular dynamics | ||||
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Publisher | Place of Publication | Editor | |||
Language | Wos | 000835946500001 | Publication Date | 2022-07-25 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 1944-8244 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor ![]() |
9.5 | Times cited | 9 | Open Access | OpenAccess |
Notes | Approved | Most recent IF: 9.5 | |||
Call Number | UA @ admin @ c:irua:189467 | Serial | 7127 | ||
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Author | Cunha, D.M.; Gauquelin, N.; Xia, R.; Verbeeck, J.; Huijben, M. | ||||
Title | Self-assembled epitaxial cathode-electrolyte nanocomposites for 3D microbatteries | Type | A1 Journal article | ||
Year | 2022 | Publication | ACS applied materials and interfaces | Abbreviated Journal | Acs Appl Mater Inter |
Volume | 14 | Issue | 37 | Pages | 42208-42214 |
Keywords | A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT) | ||||
Abstract | The downscaling of electronic devices requires rechargeable microbatteries with enhanced energy and power densities. Here, we evaluate self-assembled vertically aligned nano-composite (VAN) thin films as a platform to create high-performance three-dimensional (3D) microelectrodes. This study focuses on controlling the VAN formation to enable interface engineering between the LiMn2O4 cathode and the (Li,La)TiO3 solid electrolyte. Electrochemical analysis in a half cell against lithium metal showed the absence of sharp redox peaks due to the confinement in the electrode pillars at the nanoscale. The (100)-oriented VAN thin films showed better rate capability and stability during extensive cycling due to the better alignment to the Li-diffusion channels. However, an enhanced pseudocapacitive contribution was observed for the increased total surface area within the (110)-oriented VAN thin films. These results demonstrate for the first time the electrochemical behavior of cathode-electrolyte VANs for lithium-ion 3D microbatteries while pointing out the importance of control over the vertical interfaces. | ||||
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Publisher | Place of Publication | Editor | |||
Language | Wos | 000852647100001 | Publication Date | 2022-09-06 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 1944-8244 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor ![]() |
9.5 | Times cited | 4 | Open Access | OpenAccess |
Notes | This research was carried out with the support from the Netherlands Organization for Scientific Research (NWO) under VIDI grant no. 13456. | Approved | Most recent IF: 9.5 | ||
Call Number | UA @ admin @ c:irua:190619 | Serial | 7206 | ||
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Author | Choisez, L.; Ding, L.; Marteleur, M.; Kashiwar, A.; Idrissi, H.; Jacques, P.J. | ||||
Title | Shear banding-activated dynamic recrystallization and phase transformation during quasi-static loading of β-metastable Ti – 12 wt % Mo alloy | Type | A1 Journal article | ||
Year | 2022 | Publication | Acta materialia | Abbreviated Journal | Acta Mater |
Volume | 235 | Issue | Pages | 118088-13 | |
Keywords | A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT) | ||||
Abstract | Dynamic recrystallization (DRX) within adiabatic shear bands forming during the fracture of TRIP-TWIP β−metastable Ti-12Mo (wt %) alloy was recently reported. The formation of 1-3 µm thick-adiabatic shear bands, and of dynamic recrystallization, was quite surprising as their occurrence generally requires high temperature and/or high strain rate loading while these samples were loaded in quasi-static conditions at room temperature. To better understand the fracture mechanism and associated microstructural evolution, thin foils representative of different stages of the fracture process were machined from the fracture surface by Focused Ion Beam (FIB) and analyzed by Transmission Electron Microscopy (TEM) and Automated Crystal Orientation mapping (ACOM-TEM). Complex microstructure transformations involving severe plastic deformed nano-structuration, crystalline rotation and local precipitation of the omega phase were identified. The spatial and temporal evolution of the microstructure during the propagation of the crack was explained through dynamic recovery and continuous dynamic recrystallization, and linked to the modelled distribution of temperature and strain level where TEM samples were extracted. | ||||
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Publisher | Place of Publication | Editor | |||
Language | Wos | 000814729300005 | Publication Date | 2022-06-05 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 1359-6454 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor ![]() |
9.4 | Times cited | Open Access | OpenAccess | |
Notes | Approved | Most recent IF: 9.4 | |||
Call Number | UA @ admin @ c:irua:188505 | Serial | 7096 | ||
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Author | Arseenko, M.; Hannard, F.; Ding, L.; Zhao, L.; Maire, E.; Villanova, J.; Idrissi, H.; Simar, A. | ||||
Title | A new healing strategy for metals : programmed damage and repair | Type | A1 Journal article | ||
Year | 2022 | Publication | Acta materialia | Abbreviated Journal | Acta Mater |
Volume | 238 | Issue | Pages | 118241-10 | |
Keywords | A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT) | ||||
Abstract | Self-healing strategies aim at avoiding part repair or even replacement, which is time consuming, expen-sive and generates waste. However, strategies for metallic systems are still under-developed and solid-state solutions for room temperature service are limited to nano-scale damage repair. Here we propose a new healing strategy of micron-sized damage requiring only short and low temperature heating. This new strategy is based on damage localization particles, which can be healed by fast diffusing atoms of the matrix activated during heat treatment. The healing concept was successfully validated with a com-mercial aluminum alloy and manufactured by Friction Stir Processing (FSP). Damage was demonstrated to initiate on particles that were added to the matrix during material processing. In situ 2D and 3D nano -imaging confirmed healing of the damaged material and showed that heating this material for 10 min at 400 degrees C is sufficient to heal incipient damage with complete filling of 70% of all damage (and up to 90% when their initial size is below 0.2 mu m). Furthermore, strength is retained and the work of fracture of the alloy is improved by about 40% after healing. The proposed Programmed Damage and Repair healing strategy could be extended to other metal based systems presenting precipitation. (C) 2022 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. | ||||
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Publisher | Place of Publication | Editor | |||
Language | Wos | 000843502700006 | Publication Date | 2022-08-03 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 1359-6454 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor ![]() |
9.4 | Times cited | Open Access | Not_Open_Access | |
Notes | Approved | Most recent IF: 9.4 | |||
Call Number | UA @ admin @ c:irua:190561 | Serial | 7121 | ||
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Author | Idrissi, H.; Béché, A.; Gauquelin, N.; Ul-Haq, I.; Bollinger, C.; Demouchy, S.; Verbeeck, J.; Pardoen, T.; Schryvers, D.; Cordier, P. | ||||
Title | On the formation mechanisms of intragranular shear bands in olivine by stress-induced amorphization | Type | A1 Journal article | ||
Year | 2022 | Publication | Acta materialia | Abbreviated Journal | Acta Mater |
Volume | 239 | Issue | Pages | 118247-118249 | |
Keywords | A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT) | ||||
Abstract | Intragranular amorphization shear lamellae are found in deformed olivine aggregates. The detailed trans-mission electron microscopy analysis of intragranular lamella arrested in the core of a grain provides novel information on the amorphization mechanism. The deformation field is complex and heteroge-neous, corresponding to a shear crack type instability involving mode I, II and III loading components. The formation and propagation of the amorphous lamella is accompanied by the formation of crystal defects ahead of the tip. These defects are geometrically necessary [001] dislocations, characteristics of high-stress deformation in olivine, and rotational nanodomains which are tentatively interpreted as disclinations. We show that these defects play an important role in dictating the path followed by the amorphous lamella. Stress-induced amorphization in olivine would thus result from a direct crystal-to -amorphous transformation associated with a shear instability and not from a mechanical destabilization due to the accumulation of high number of defects from an intense preliminary deformation. The pref-erential alignment of some lamellae along (010) is a proof of the lower ultimate mechanical strength of these planes.(c) 2022 The Authors. Published by Elsevier Ltd on behalf of Acta Materialia Inc. This is an open access article under the CC BY license ( http://creativecommons.org/licenses/by/4.0/ ) | ||||
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Publisher | Place of Publication | Editor | |||
Language | Wos | 000861076600004 | Publication Date | 2022-08-05 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 1359-6454 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor ![]() |
9.4 | Times cited | 5 | Open Access | OpenAccess |
Notes | The QuanTEM microscope was partially funded by the Flemish government. The K2 camera was funded by FWO Hercules fund G0H4316N 'Direct electron detector for soft matter TEM'. A. Beche acknowledges funding from FWO project G093417N ('Compressed sensing enabling low dose imaging in transmission electron microscopy'). H. Idrissi is mandated by the Belgian National Fund for Scientific Research (FSR-FNRS). This work was supported by the FNRS under Grant PDR – T011322F and by the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme under grant agreement No 787,198 Time Man. J-L Rouviere is acknowledged for his support with the GPA softawre. | Approved | Most recent IF: 9.4 | ||
Call Number | UA @ admin @ c:irua:191432 | Serial | 7186 | ||
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Author | Hajizadeh, A.; Shahalizade, T.; Riahifar, R.; Yaghmaee, M.S.; Raissi, B.; Gholam, S.; Aghaei, A.; Rahimisheikh, S.; Ghazvini, A.S. | ||||
Title | Electrophoretic deposition as a fabrication method for Li-ion battery electrodes and separators : a review | Type | A1 Journal article | ||
Year | 2022 | Publication | Journal of power sources | Abbreviated Journal | J Power Sources |
Volume | 535 | Issue | Pages | 231448-26 | |
Keywords | A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT) | ||||
Abstract | Electrophoretic Deposition (EPD) is one of the alternative methods to fabricate and enhance the performance of Li-ion batteries. It enables the fabrication of electrodes with outstanding qualities and different electrochemical properties by the great domination over various parameters. EPD facilitates the processing of electrodes by binder-free grafting of nanomaterials, such as graphene derivatives, carbon nanotube, and nanoparticles, into the battery electrodes. It also enables the assembly of the free-standing electrodes with 3D structure and provides possibilities, such as the fabrication of the electrodes with an oriented microstructure, even on 3D substrates to improve the energy or power density. In this review, after an introduction to EPD, the effect of EPD parameters on the properties of the prepared electrodes is reviewed. Then, EPD is compared with tape cast, and its advantages over the conventional method are evaluated. Also, employing the EPD method as an intermediate process is discussed. Finally, the application of EPD in the fabrication of separators is assessed, and the prospects for the future are described. | ||||
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Language | Wos | 000913348500001 | Publication Date | 2022-04-21 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0378-7753 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor ![]() |
9.2 | Times cited | Open Access | Not_Open_Access | |
Notes | Approved | Most recent IF: 9.2 | |||
Call Number | UA @ admin @ c:irua:194403 | Serial | 7303 | ||
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Author | Van Winckel, T.; Ngo, N.; Sturm, B.; Al-Omari, A.; Wett, B.; Bott, C.; Vlaeminck, S.E.; De Clippeleir, H. | ||||
Title | Enhancing bioflocculation in high-rate activated sludge improves effluent quality yet increases sensitivity to surface overflow rate | Type | A1 Journal article | ||
Year | 2022 | Publication | Chemosphere | Abbreviated Journal | Chemosphere |
Volume | 308 | Issue | 2 | Pages | 136294-11 |
Keywords | A1 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) | ||||
Abstract | High-rate activated sludge (HRAS) relies on good bioflocculation and subsequent solid-liquid separation to maximize the capture of organics. However, full-scale applications often suffer from poor and unpredictable effluent suspended solids (ESS). While the biological aspects of bioflocculation are thoroughly investigated, the effects of fines (settling velocity < 0.6 m3/m2/h), shear and surface overflow rate (SOR) are unclear. This work tackled the impact of fines, shear, and SOR on the ESS in absence of settleable influent solids. This was assessed on a full-scale HRAS step-feed (SF) and pilot-scale HRAS contact-stabilization (CS) configuration using batch settling tests, controlled clarifier experiments, and continuous operation of reactors. Fines contributed up to 25% of the ESS in the full-scale SF configuration. ESS decreased up to 30 mg TSS/L when bioflocculation was enhanced with the CS configuration. The feast-famine regime applied in CS promoted the production of high-quality extracellular polymeric substances (EPS). However, this resulted in a narrow and unfavorable settling velocity distribution, with 50% ± 5% of the sludge mass settling between 0.6 and 1.5 m3/m2/h, thus increasing sensitivity towards SOR changes. A low shear environment (20 s−1) before the clarifier for at least one min was enough to ensure the best possible settling velocity distribution, regardless of prior shear conditions. Overall, this paper provides a more complete view on the drivers of ESS in HRAS systems, creating the foundation for the design of effective HRAS clarifiers. Tangible recommendations are given on how to manage fines and establish the optimal settling velocity of the sludge. | ||||
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Publisher | Place of Publication | Editor | |||
Language | Wos | 000863979600006 | Publication Date | 2022-09-06 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0045-6535; 1879-1298 | ISBN | Additional Links | UA library record; WoS full record | |
Impact Factor ![]() |
8.8 | Times cited | Open Access | OpenAccess | |
Notes | Approved | Most recent IF: 8.8 | |||
Call Number | UA @ admin @ c:irua:190187 | Serial | 7154 | ||
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Author | Le, T.-S.; Nguyen, P.-D.; Ngo, H.H.; Bui, X.-T.; Dang, B.-T.; Diels, L.; Bui, H.-H.; Nguyen, M.-T.; Le Quang, D.-T. | ||||
Title | Two-stage anaerobic membrane bioreactor for co-treatment of food waste and kitchen wastewater for biogas production and nutrients recovery | Type | A1 Journal article | ||
Year | 2022 | Publication | Chemosphere | Abbreviated Journal | Chemosphere |
Volume | 309 | Issue | 1 | Pages | 136537-136539 |
Keywords | A1 Journal article; Sustainable Energy, Air and Water Technology (DuEL) | ||||
Abstract | Co-digestion of organic waste and wastewater is receiving increased attention as a plausible waste management approach toward energy recovery. However, traditional anaerobic processes for co-digestion are particularly susceptible to severe organic loading rates (OLRs) under long-term treatment. To enhance technological feasi-bility, this work presented a two-stage Anaerobic Membrane Bioreactor (2 S-AnMBR) composed of a hydrolysis reactor (HR) followed by an anaerobic membrane bioreactor (AnMBR) for long-term co-digestion of food waste and kitchen wastewater. The OLRs were expanded from 4.5, 5.6, and 6.9 kg COD m- 3 d-1 to optimize biogas yield, nitrogen recovery, and membrane fouling at ambient temperatures of 25-32 degrees C. Results showed that specific methane production of UASB was 249 +/- 7 L CH4 kg-1 CODremoved at the OLR of 6.9 kg TCOD m- 3 d-1. Total Chemical Oxygen Demand (TCOD) loss by hydrolysis was 21.6% of the input TCOD load at the hydraulic retention time (HRT) of 2 days. However, low total volatile fatty acid concentrations were found in the AnMBR, indicating that a sufficiently high hydrolysis efficiency could be accomplished with a short HRT. Furthermore, using AnMBR structure consisting of an Upflow Anaerobic Sludge Blanket Reactor (UASB) followed by a side -stream ultrafiltration membrane alleviated cake membrane fouling. The wasted digestate from the AnMBR comprised 42-47% Total Kjeldahl Nitrogen (TKN) and 57-68% total phosphorous loading, making it suitable for use in soil amendments or fertilizers. Finally, the predominance of fine particles (D10 = 0.8 mu m) in the ultra -filtration membrane housing (UFMH) could lead to a faster increase in trans-membrane pressure during the filtration process. | ||||
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Publisher | Place of Publication | Editor | |||
Language | Wos | 000866470600004 | Publication Date | 2022-09-20 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0045-6535; 1879-1298 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor ![]() |
8.8 | Times cited | Open Access | Not_Open_Access | |
Notes | Approved | Most recent IF: 8.8 | |||
Call Number | UA @ admin @ c:irua:191557 | Serial | 7347 | ||
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Author | Hao, Y.; Velpula, G.; Kaltenegger, M.; Bodlos, W.R.; Vibert, F.; Mali, K.S.; De Feyter, S.; Resel, R.; Geerts, Y.H.; Van Aert, S.; Beljonne, D.; Lazzaroni, R. | ||||
Title | From 2D to 3D : bridging self-assembled monolayers to a substrate-induced polymorph in a molecular semiconductor | Type | A1 Journal article | ||
Year | 2022 | Publication | Chemistry of materials | Abbreviated Journal | Chem Mater |
Volume | 34 | Issue | 5 | Pages | 2238-2248 |
Keywords | A1 Journal article; Electron microscopy for materials research (EMAT) | ||||
Abstract | In this study, a new bottom-up approach is proposed to predict the crystal structure of the substrate-induced polymorph (SIP) of an archetypal molecular semiconductor. In spite of intense efforts, the formation mechanism of SIPs is still not fully understood, and predicting their crystal structure is a very delicate task. Here, we selected lead phthalocyanine (PbPc) as a prototypical molecular material because it is a highly symmetrical yet nonplanar molecule and we demonstrate that the growth and crystal structure of the PbPc SIPs can be templated by the corresponding physisorbed self-assembled molecular networks (SAMNs). Starting from SAMNs of PbPc formed at the solution/graphite interface, the structural and energetic aspects of the assembly were studied by a combination of in situ scanning tunneling microscopy and multiscale computational chemistry approach. Then, the growth of a PbPc SIP on top of the physisorbed monolayer was modeled without prior experimental knowledge, from which the crystal structure of the SIP was predicted. The theoretical prediction of the SIP was verified by determining the crystal structure of PbPc thin films using X-ray diffraction techniques, revealing the formation of a new polymorph of PbPc on the graphite substrate. This study clearly illustrates the correlation between the SAMNs and SIPs, which are traditionally considered as two separate but conceptually connected research areas. This approach is applicable to molecular materials in general to predict the crystal structure of their SIPs. | ||||
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Publisher | Place of Publication | Editor | |||
Language | Wos | 000812125800001 | Publication Date | 2022-02-17 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0897-4756; 1520-5002 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor ![]() |
8.6 | Times cited | Open Access | Not_Open_Access | |
Notes | Approved | Most recent IF: 8.6 | |||
Call Number | UA @ admin @ c:irua:189086 | Serial | 7084 | ||
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Author | Zhang, Y.; Qin, S.; Claes, N.; Schilling, W.; Sahoo, P.K.; Ching, H.Y.V.; Jaworski, A.; Lemière, F.; Slabon, A.; Van Doorslaer, S.; Bals, S.; Das, S. | ||||
Title | Direct Solar Energy-Mediated Synthesis of Tertiary Benzylic Alcohols Using a Metal-Free Heterogeneous Photocatalyst | Type | A1 Journal article | ||
Year | 2022 | Publication | ACS Sustainable Chemistry and Engineering | Abbreviated Journal | Acs Sustain Chem Eng |
Volume | 10 | Issue | 1 | Pages | 530-540 |
Keywords | A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT); Organic synthesis (ORSY) | ||||
Abstract | Direct hydroxylation via the functionalization of tertiary benzylic C(sp3)-H bond is of great significance for obtaining tertiary alcohols which find wide applications in pharmaceuticals as well as in fine chemical industries. However, current synthetic procedures use toxic reagents and therefore, the development of a sustainable strategy for the synthesis of tertiary benzyl alcohols is highly desirable. To solve this problem, herein, we report a metal-free heterogeneous photocatalyst to synthesize the hydroxylated products using oxygen as the key reagent. Various benzylic substrates were employed into our mild reaction conditions to afford the desirable products in good to excellent yields. More importantly, gram-scale reaction was achieved via harvesting direct solar energy and exhibited high quantity of the product. The high stability of the catalyst was proved via recycling the catalyst and spectroscopic analyses. Finally, a possible mechanism was proposed based on the EPR and other experimental evidence. |
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Publisher | Place of Publication | Editor | |||
Language | Wos | 000736518000001 | Publication Date | 2022-01-10 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 2168-0485 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor ![]() |
8.4 | Times cited | 24 | Open Access | OpenAccess |
Notes | We thank BOF joint PhD grant (to Y. Z.), Francqui Foundation and FWO research grant (to S.D.), Chinese Scholarship Council (to Y.Z.). A.S. would like to thank the Swedish Energy Agency for financial support (project nr: 5050-1). The SEM microscope was partly funded by the Hercules Fund from the Flemish Government. | Approved | Most recent IF: 8.4 | ||
Call Number | EMAT @ emat @c:irua:184744 | Serial | 6900 | ||
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Author | Hollevoet, L.; Vervloessem, E.; Gorbanev, Y.; Nikiforov, A.; De Geyter, N.; Bogaerts, A.; Martens, J.A. | ||||
Title | Energy‐Efficient Small‐Scale Ammonia Synthesis Process with Plasma‐enabled Nitrogen Oxidation and Catalytic Reduction of Adsorbed NOx | Type | A1 Journal article | ||
Year | 2022 | Publication | Chemsuschem | Abbreviated Journal | Chemsuschem |
Volume | Issue | Pages | |||
Keywords | A1 Journal article; Engineering sciences. Technology; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | Industrial ammonia production without CO2 emission and with low energy consumption is one of the technological grand challenges of this age. Current Haber-Bosch ammonia mass production processes work with a thermally activated iron catalyst needing high pressure. The need for large volumes of hydrogen gas and the continuous operation mode render electrification of Haber-Bosch plants difficult to achieve. Electrochemical solutions at low pressure and temperature are faced with the problematic inertness of the nitrogen molecule on electrodes. Direct reduction of N2 to ammonia is only possible with very reactive chemicals such as lithium metal, the regeneration of which is energy intensive. Here, the attractiveness of an oxidative route for N2 activation was presented. N2 conversion to NOx in a plasma reactor followed by reduction with H2 on a heterogeneous catalyst at low pressure could be an energy-efficient option for small-scale distributed ammonia production with renewable electricity and without intrinsic CO2 footprint. | ||||
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Publisher | Place of Publication | Editor | |||
Language | Wos | 000772893400001 | Publication Date | 2022-03-25 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 1864-5631 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor ![]() |
8.4 | Times cited | Open Access | OpenAccess | |
Notes | Vlaamse regering, HBC.2019.0108 ; Vlaamse regering; KU Leuven, C3/20/067 ; We gratefully acknowledge financial support by the Flemish Government through the Moonshot cSBO project P2C (HBC.2019.0108). J.A.M. and A.B. acknowledge the Flemish Government for long-term structural funding (Methusalem). J.A.M. © 2022 Wiley-VCH GmbH | Approved | Most recent IF: 8.4 | ||
Call Number | PLASMANT @ plasmant @c:irua:187251 | Serial | 7054 | ||
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Author | Bignoli, F.; Rashid, S.; Rossi, E.; Jaddi, S.; Djemia, P.; Terraneo, G.; Li Bassi, A.; Idrissi, H.; Pardoen, T.; Sebastiani, M.; Ghidelli, M. | ||||
Title | Effect of annealing on mechanical properties and thermal stability of ZrCu/O nanocomposite amorphous films synthetized by pulsed laser deposition | Type | A1 Journal article | ||
Year | 2022 | Publication | Materials & design | Abbreviated Journal | Mater Design |
Volume | 221 | Issue | Pages | 110972-10 | |
Keywords | A1 Journal article; Electron microscopy for materials research (EMAT) | ||||
Abstract | Binary ZrCu nanocomposite amorphous films are synthetized by pulsed laser deposition (PLD) under vac-uum (2 x 10-3 Pa) and 10 Pa He pressure, leading to fully amorphous compact and nanogranular mor-phologies, respectively. Then, post-thermal annealing treatments are carried out to explore thermal stability and crystallization phenomena together with the evolution of mechanical properties. Compact films exhibit larger thermal stability with partial crystallization phenomena starting at 420 degrees C, still to be completed at 550 degrees C, while nanogranular films exhibit early-stage crystallization at 300 degrees C and com-pleted at 485 degrees C. The microstructural differences are related to a distinct evolution of mechanical | ||||
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Corporate Author | Thesis | ||||
Publisher | Place of Publication | Editor | |||
Language | Wos | 000886072100004 | Publication Date | 2022-07-21 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0264-1275; 1873-4197 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor ![]() |
8.4 | Times cited | Open Access | OpenAccess | |
Notes | Approved | Most recent IF: 8.4 | |||
Call Number | UA @ admin @ c:irua:192194 | Serial | 7299 | ||
Permanent link to this record | |||||
Author | Meng, X.; Chen, S.; Peng, H.; Bai, H.; Zhang, S.; Su, X.; Tan, G.; Van Tendeloo, G.; Sun, Z.; Zhang, Q.; Tang, X.; Wu, J. | ||||
Title | Ferroelectric engineering : enhanced thermoelectric performance by local structural heterogeneity | Type | A1 Journal article | ||
Year | 2022 | Publication | Science China : materials | Abbreviated Journal | Sci China Mater |
Volume | Issue | Pages | |||
Keywords | A1 Journal article; Electron microscopy for materials research (EMAT) | ||||
Abstract | Although traditional ferroelectric materials are usually dielectric and nonconductive, GeTe is a typical ferroelectric semiconductor, possessing both ferroelectric and semiconducting properties. GeTe is also a widely studied thermoelectric material, whose performance has been optimized by doping with various elements. However, the impact of the ferroelectric domains on the thermoelectric properties remains unclear due to the difficulty to directly observe the ferroelectric domains and their evolutions under actual working conditions where the material is exposed to high temperatures and electric currents. Herein, based on in-situ investigations of the ferroelectric domains and domain walls in both pure and Sb-doped GeTe crystals, we have been able to analyze the dynamic evolution of the ferroelectric domains and domain walls, exposed to an electric field and temperature. Local structural heterogeneities and nano-sized ferroelectric domains are generated due to the interplay of the Sb3+ dopant and the Ge-vacancies, leading to the increased number of charged domain walls and a much improved thermoelectric performance. This work reveals the fundamental mechanism of ferroelectric thermoelectrics and provides insights into the decoupling of previously interdependent properties such as thermo-power and electrical conductivity. | ||||
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Corporate Author | Thesis | ||||
Publisher | Place of Publication | Editor | |||
Language | Wos | 000749973500001 | Publication Date | 2022-02-02 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 2095-8226; 2199-4501 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor ![]() |
8.1 | Times cited | Open Access | Not_Open_Access | |
Notes | Approved | Most recent IF: 8.1 | |||
Call Number | UA @ admin @ c:irua:186429 | Serial | 6959 | ||
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Author | Chen, J.; Ying, J.; Xiao, Y.; Dong, Y.; Ozoemena, K., I; Lenaerts, S.; Yang, X. | ||||
Title | Stoichiometry design in hierarchical CoNiFe phosphide for highly efficient water oxidation | Type | A1 Journal article | ||
Year | 2022 | Publication | Science China : materials | Abbreviated Journal | Sci China Mater |
Volume | 65 | Issue | 10 | Pages | 2685-2693 |
Keywords | A1 Journal article; Sustainable Energy, Air and Water Technology (DuEL) | ||||
Abstract | Rational composition design of trimetallic phosphide catalysts is of significant importance for enhanced surface reaction and efficient catalytic performance. Herein, hierarchical CoxNiyFezP with precise control of stoichiometric metallic elements (x:y:z = (1-10):(1-10):1) has been synthesized, and Co1.3Ni0.5Fe0.2P, as the most optimal composition, exhibits remarkable catalytic activity (eta = 320 mV at 10 mA cm(-2)) and long-term stability (ignorable decrease after 10 h continuous test at the current density of 10 mA cm(-2)) toward oxygen evolution reaction (OER). It is found that the surface P in Co1.3Ni0.5Fe0.2P was replaced by 0 under the OER process. The density function theory calculations before and after long-term stability tests suggest the clear increasing of the density of states near the Fermi level of Co1.3Ni0.5Fe0.2P/ Co1.3Ni0.5Fe0.2O, which could enhance the OH- adsorption of our electrocatalysts and the corresponding OER performance. | ||||
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Corporate Author | Thesis | ||||
Publisher | Place of Publication | Editor | |||
Language | Wos | 000805530000001 | Publication Date | 2022-05-27 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 2095-8226; 2199-4501 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor ![]() |
8.1 | Times cited | Open Access | Not_Open_Access | |
Notes | Approved | Most recent IF: 8.1 | |||
Call Number | UA @ admin @ c:irua:189074 | Serial | 7212 | ||
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Author | Thomassen, G.; Van Passel, S.; Alaerts, L.; Dewulf, J. | ||||
Title | Retrospective and prospective material flow analysis of the post-consumer plastic packaging waste management system in Flanders | Type | A1 Journal article | ||
Year | 2022 | Publication | Waste Management | Abbreviated Journal | Waste Manage |
Volume | 147 | Issue | Pages | 10-21 | |
Keywords | A1 Journal article; Engineering Management (ENM) | ||||
Abstract | The post-consumer plastic packaging waste management in Flanders was analyzed by performing a retrospective material flow analysis, covering an extensive period from 1985 to 2019. In addition, a prospective material flow analysis of 32 improvement scenarios was performed, based on expected changes in the waste management system. Mass recovery rates were calculated based on different interpretations of the calculation rules. Moreover, various cascading levels were identified to differentiate between the quality level of the secondary applications. The mass recovery rate including only recycling evolved from a value of 0% in 1985 to 31% in 2019 and could be increased to 36-62% depending on the improvement scenario selected. However, the different interpretations of the calculation rules led to a variation of up to 20 and 41% on this mass recovery rates for the retrospective and prospective analysis, respectively. The introduction of monostream recycling for additional post-consumer plastic packaging flows, such as low-density polyethylene, did not lead to increasing mass recovery rates, if no differentiation for the cascading levels was made. The Belgian recycling target of 65% for 2023 will be challenging if the strictest calculation method needs to be followed or if the improvements in the Flemish postconsumer plastic packaging waste system do not follow the best-case collection scenarios under the given assumptions. To harmonize the calculation and monitoring of these targets, clear calculation rules need to be accompanied with a harmonized monitoring system over the entire waste management system. | ||||
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Corporate Author | Thesis | ||||
Publisher | Place of Publication | Editor | |||
Language | Wos | 000802961100002 | Publication Date | 2022-05-17 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0956-053x | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor ![]() |
8.1 | Times cited | Open Access | OpenAccess | |
Notes | Approved | Most recent IF: 8.1 | |||
Call Number | UA @ admin @ c:irua:188651 | Serial | 7367 | ||
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Author | Larraín, M.; Billen, P.; Van Passel, S. | ||||
Title | The effect of plastic packaging recycling policy interventions as a complement to extended producer responsibility schemes : a partial equilibrium model | Type | A1 Journal article | ||
Year | 2022 | Publication | Waste Management | Abbreviated Journal | Waste Manage |
Volume | 153 | Issue | Pages | 355-366 | |
Keywords | A1 Journal article; Engineering Management (ENM); Intelligence in PRocesses, Advanced Catalysts and Solvents (iPRACS) | ||||
Abstract | Extended producer responsibility (EPR) schemes have effectively increased the plastic waste that is separately collected. However, due to the structure of the recycling industry, EPR cannot increase recycling rates up to the target levels.Additional policy instruments to increase recycling rates such as recycled content targets, green dot fees bonus for recycled content, recycling targets and taxes on non-recycled plastic packaging have been discussed on a political level in the last years. However, very little research has quantitatively studied the effectiveness of these policy interventions.Using a partial equilibrium model, this paper examines the effectiveness of the implementation of the aforementioned policy instruments to increase recycling rates and the impact on different stakeholders of the value chain: plastic producers, consumers, producer responsibility organization and recyclers.Results show that direct interventions (recycled content standards and recycling targets) have the benefit of decoupling the recycling industry from external markets such as the oil market. They can be a good starting point to increase recycling, but in the long term they may be restricting by not presenting incentives to achieve recycling levels beyond the targeted amounts and by limiting technological innovation. On the contrary, eco-nomic interventions such as a green dot fee bonus or a packaging tax create economic incentives for recycling. However, these incentives are diminished by the lower perceived quality of packaging with higher recycled content levels. | ||||
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Corporate Author | Thesis | ||||
Publisher | Place of Publication | Editor | |||
Language | Wos | 000868915000004 | Publication Date | 2022-09-30 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0956-053x | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor ![]() |
8.1 | Times cited | Open Access | Not_Open_Access | |
Notes | Approved | Most recent IF: 8.1 | |||
Call Number | UA @ admin @ c:irua:191367 | Serial | 7370 | ||
Permanent link to this record | |||||
Author | Wanten, B.; Maerivoet, S.; Vantomme, C.; Slaets, J.; Trenchev, G.; Bogaerts, A. | ||||
Title | Dry reforming of methane in an atmospheric pressure glow discharge: Confining the plasma to expand the performance | Type | A1 Journal article | ||
Year | 2022 | Publication | Journal Of Co2 Utilization | Abbreviated Journal | J Co2 Util |
Volume | 56 | Issue | Pages | 101869 | |
Keywords | A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | We present a confined atmospheric pressure glow discharge plasma reactor, with very good performance towards dry reforming of methane, i.e., CO2 and CH4 conversion of 64 % and 94 %, respectively, at an energy cost of 3.5–4 eV/molecule (or 14–16 kJ/L). This excellent performance is among the best reported up to now for all types of plasma reactors in literature, and is due to the confinement of the plasma, which maximizes the fraction of gas passing through the active plasma region. The main product formed is syngas, with H2O and C2H2 as byproducts. We developed a quasi-1D chemical kinetics model, showing good agreement with the experimental results, which provides a thorough insight in the reaction pathways underlying the conversion of CO2 and CH4 and the formation of the different products. | ||||
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Corporate Author | Thesis | ||||
Publisher | Place of Publication | Editor | |||
Language | Wos | 000740230000002 | Publication Date | 2021-12-23 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 2212-9820 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor ![]() |
7.7 | Times cited | Open Access | OpenAccess | |
Notes | Vlaamse regering; European Research Council, 810182 ; Herculesstichting; European Research Council; Horizon 2020 Framework Programme; Universiteit Antwerpen; This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No 810182 – SCOPE ERC Synergy project), and through long-term structural funding (Methusalem). The calculations were performed using the Turing HPC infrastructure at the CalcUA core facility of the Universiteit Antwerpen (UAntwerpen), a division of the Flemish Supercomputer Center VSC, funded by the Hercules Foundation, the Flemish Government (department EWI) and the UAntwerpen. Finally, we thank T. Kenis, J. Van den Hoek, and T. Breugelmans from the University of Antwerp, for per forming the liquid analysis. | Approved | Most recent IF: 7.7 | ||
Call Number | PLASMANT @ plasmant @c:irua:185163 | Serial | 6899 | ||
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Author | Li, S.; Liu, C.; Bogaerts, A.; Gallucci, F. | ||||
Title | Editorial: Special issue on CO2 utilization with plasma technology | Type | Editorial | ||
Year | 2022 | Publication | Journal Of Co2 Utilization | Abbreviated Journal | J Co2 Util |
Volume | 61 | Issue | Pages | 102017 | |
Keywords | Editorial; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | Plasma technology has advanced significantly in recent years, with application ranging from chemical conversion, to surface treatment, material development and several other fields. Special attention has been paid to the development of possible novel approaches for the conversion of chemicals in a more sustainable way. Plasma technology offers advantages over thermochemical routes such as high process versatility, mild reaction condition, one-step synthesis, fast reaction and instant control. More importantly, it can be easily combined with electricity generated from various renewable sources and is suitable for energy storage via the conversion of intermittent renewable energy into carbon-neutral fuels or other chemicals. In recent years, there has been a growing interest in the development of plasma technology for CO2 utilization. Investigation on different reactions such as CO2 splitting, dry reforming of methane (DRM) and CO2 hydrogenation with different types of plasma reactors and catalysts have been reported by researchers worldwide. Although technological maturity still needs to be increased, the potential of plasma has been well-recognized by the scientific community and industry. More research output in the future is expected as a result of intensive research activities and various kinds of investment. In this context, we present this special issue on CO2 utilization with plasma technology, which collects 22 articles, covering topics in related areas such as plasma reactor design, plasma catalysis, plasmamaterial interaction, modeling and new ideas for possible applications. | ||||
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Publisher | Place of Publication | Editor | |||
Language | Wos | 000798071200005 | Publication Date | 0000-00-00 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 2212-9820 | ISBN | Additional Links | UA library record; WoS full record | |
Impact Factor ![]() |
7.7 | Times cited | Open Access | OpenAccess | |
Notes | Approved | Most recent IF: 7.7 | |||
Call Number | PLASMANT @ plasmant @c:irua:188287 | Serial | 7058 | ||
Permanent link to this record | |||||
Author | Vertongen, R.; Trenchev, G.; Van Loenhout, R.; Bogaerts, A. | ||||
Title | Enhancing CO2 conversion with plasma reactors in series and O2 removal | Type | A1 Journal article | ||
Year | 2022 | Publication | Journal Of Co2 Utilization | Abbreviated Journal | J Co2 Util |
Volume | 66 | Issue | Pages | 102252 | |
Keywords | A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | In this work, we take a crucial step towards the industrial readiness of plasma-based CO2 conversion. We present a stepwise method to study plasma reactors in series as a first approach to a recycle flow. By means of this procedure, the CO2 conversion is enhanced by a factor of 3, demonstrating that a single-pass plasma treatment performs far below the optimal capacity of the reactor. Furthermore, we explore the effect of O2 in the mixture with our flexible procedure. Addition of O2 in the mixture has a clear detrimental effect on the conversion, in agreement with other experiments in atmospheric pressure plasmas. O2 removal is however highly beneficial, demonstrating a conversion per pass that is 1.6 times higher than the standard procedure. Indeed, extracting one of the products prevents recombination reactions. Based on these insights, we discuss opportunities for further improvements, especially in the field of specialised separation techniques. | ||||
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Corporate Author | Thesis | ||||
Publisher | Place of Publication | Editor | |||
Language | Wos | 000872550900003 | Publication Date | 0000-00-00 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 2212-9820 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor ![]() |
7.7 | Times cited | Open Access | OpenAccess | |
Notes | We acknowledge financial support from the Fund for Scientific Research (FWO) Flanders (Grant ID 110221 N), the Flemish Agency for Innovation and Entrepreneurship (VLAIO) (Grant ID HBC.2021.0251), and the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No 810182 – SCOPE ERC Synergy project). We also thank L. Hollevoet, K. Rouwenhorst, F. Girard-Sahun, B. Wanten and I. Tsonev for the interesting discussions and practical help with the experiments. | Approved | Most recent IF: 7.7 | ||
Call Number | PLASMANT @ plasmant @c:irua:191467 | Serial | 7111 | ||
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Author | Omranian, S.R.; Geluykens, M.; Van Hal, M.; Hasheminejad, N.; Rocha Segundo, I.; Pipintakos, G.; Denys, S.; Tytgat, T.; Fraga Freitas, E.; Carneiro, J.; Verbruggen, S.; Vuye, C. | ||||
Title | Assessing the potential of application of titanium dioxide for photocatalytic degradation of deposited soot on asphalt pavement surfaces | Type | A1 Journal article | ||
Year | 2022 | Publication | Construction and building materials | Abbreviated Journal | Constr Build Mater |
Volume | 350 | Issue | Pages | 128859-13 | |
Keywords | A1 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) | ||||
Abstract | It is known that pollutants and their irreparable influence can considerably jeopardize the environment and human health. Such disastrous, growing, hazardous particles urged researchers to find effective ways and diminish their destructive impacts and preserve our planet. This study evaluates the potential of incorporating Titanium Dioxide (TiO2) semiconductor nanoparticles on asphalt pavements to degrade pollutants without compromising bitumen performance. Accordingly, the Response Surface Method (RSM) was employed to develop an experimental matrix based on the central composite design. Image Analysis (IA) was used to determine the rate of soot degradation (as pollutant representative) using MATLAB and ImageJ software. Confocal Laser Scanning Microscopy (CLSM), Fourier Transform Infrared spectroscopy (FTIR), and Dynamic Shear Rheometer (DSR) were finally carried out to estimate the effects of adding different percentages of TiO2 on the micro -structural features and dispersion of the TiO2, chemical fingerprinting, and rheological performance of the bituminous binder. The results showed a promising potential of TiO2 to degrade soot (over 50%) during the conducted experiments. In addition, the RSM outcomes showed that applying a higher amount of TiO2 is more efficient for pollutant degradation. Finally, no negative impact was observed, neither on the rheological behavior nor on the aging susceptibility of the bitumen, even though the homogenous dispersion of the TiO2 was clearly captured via CLSM. | ||||
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Publisher | Place of Publication | Editor | |||
Language | Wos | 000848227000001 | Publication Date | 2022-08-20 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0950-0618 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor ![]() |
7.4 | Times cited | Open Access | OpenAccess | |
Notes | Approved | Most recent IF: 7.4 | |||
Call Number | UA @ admin @ c:irua:189820 | Serial | 7128 | ||
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Author | Quintero-Coronel, D.A.; Lenis-Rodas, Y.A.; Corredor, L.; Perreault, P.; Bula, A.; Gonzalez-Quiroga, A. | ||||
Title | Co-gasification of biomass and coal in a top-lit updraft fixed bed gasifier : syngas composition and its interchangeability with natural gas for combustion applications | Type | A1 Journal article | ||
Year | 2022 | Publication | Fuel | Abbreviated Journal | Fuel |
Volume | 316 | Issue | Pages | 123394-11 | |
Keywords | A1 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) | ||||
Abstract | The co-gasification of biomass and coal is a promising approach for efficiently integrating the unique advantages of different gasification feedstock with syngas production. Additionally, syngas from the co-gasification of locally available biomass and coal could supplement the natural gas used in household and industrial burners. The top-lit updraft gasifier features a moving ignition front that starts at the top and propagates downward through the solids bed, while air enters from the bottom and the gas product flows upwards. This study assesses the co-gasification performance of palm kernel shell and high-volatile bituminous coal in a top-lit updraft fixed bed gasifier using 70, 85, and 100 vol% biomass and equivalence ratios ranging from 0.26 to 0.34. The results indicate that the ignition front propagates faster and is more uniform as the biomass volume increases. Micro GC analysis revealed that the H2/CO ratio remained in the range of 0.57–0.59, 0.49–0.51, and 0.42–0.46 for experiments with 70, 85, and 100 vol% biomass, respectively. A gas interchangeability analysis showed that syngas-natural gas blends with up to 15 vol% of syngas could combust in atmospheric natural gas burners without modifications. Thus, the top-lit updraft gasifier shows excellent potential for the co-gasification of coal and biomass. Further research on this technology should explore steam as a gasification agent to enhance the syngas energy content and continuous solids feeding. | ||||
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Publisher | Place of Publication | Editor | |||
Language | Wos | 000783173000003 | Publication Date | 2022-01-29 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0016-2361 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor ![]() |
7.4 | Times cited | Open Access | OpenAccess | |
Notes | Approved | Most recent IF: 7.4 | |||
Call Number | UA @ admin @ c:irua:187752 | Serial | 7136 | ||
Permanent link to this record | |||||
Author | Neven, L.; Barich, H.; Ching, H.Y.V.; Khan, S.U.; Colomier, C.; Patel, H.H.; Gorun, S.M.; Verbruggen, S.; Van Doorslaer, S.; De Wael, K. | ||||
Title | Correlation between the fluorination degree of perfluorinated zinc phthalocyanines, their singlet oxygen generation ability, and their photoelectrochemical response for phenol sensing | Type | A1 Journal article | ||
Year | 2022 | Publication | Analytical chemistry | Abbreviated Journal | Anal Chem |
Volume | 94 | Issue | 13 | Pages | 5221-5230 |
Keywords | A1 Journal article; Organic synthesis (ORSY); Sustainable Energy, Air and Water Technology (DuEL); Antwerp Electrochemical and Analytical Sciences Lab (A-Sense Lab) | ||||
Abstract | Electron-withdrawing perfluoroalkyl peripheral groups grafted on phthalocyanine (Pc) macrocycles improve their single-site isolation, solubility, and resistance to self-oxidation, all beneficial features for catalytic applications. A high degree of fluorination also enhances the reducibility of Pcs and could alter their singlet oxygen (1O2) photoproduction. The ethanol/toluene 20:80 vol % solvent mixture was found to dissolve perfluorinated FnPcZn complexes, n = 16, 52, and 64, and minimize the aggregation of the sterically unencumbered F16PcZn. The 1O2 production ability of FnPcZn complexes was examined using 9,10-dimethylanthracene (DMA) and 2,2,6,6-tetramethylpiperidine (TEMP) in combination with UV–vis and electron paramagnetic resonance (EPR) spectroscopy, respectively. While the photoreduction of F52PcZn and F64PcZn in the presence of redox-active TEMP lowered 1O2 production, DMA was a suitable 1O2 trap for ranking the complexes. The solution reactivity was complemented by solid-state studies via the construction of photoelectrochemical sensors based on TiO2-supported FnPcZn, FnPcZn|TiO2. Phenol photo-oxidation by 1O2, followed by its electrochemical reduction, defines a redox cycle, the 1O2 production having been found to depend on the value of n and structural features of the supported complexes. Consistent with solution studies, F52PcZn was found to be the most efficient 1O2 generator. The insights on reactivity testing and structural–activity relationships obtained may be useful for designing efficient and robust sensors and for other 1O2-related applications of FnPcZn. | ||||
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Publisher | Place of Publication | Editor | |||
Language | Wos | 000786254500002 | Publication Date | 2022-03-22 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0003-2700; 5206-882x | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor ![]() |
7.4 | Times cited | Open Access | OpenAccess | |
Notes | Approved | Most recent IF: 7.4 | |||
Call Number | UA @ admin @ c:irua:187522 | Serial | 7141 | ||
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Author | Girard-Sahun, F.; Lefrancois, P.; Badets, V.; Arbault, S.; Clement, F. | ||||
Title | Direct sensing of superoxide and its relatives reactive oxygen and nitrogen species in phosphate buffers during cold atmospheric plasmas exposures | Type | A1 Journal article | ||
Year | 2022 | Publication | Analytical Chemistry | Abbreviated Journal | Anal Chem |
Volume | 94 | Issue | 14 | Pages | 5555-5565 |
Keywords | A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | This study aims at sensing in situ reactive oxygen and nitrogen species (RONS) and specifically superoxide anion (O-2(center dot-)) in aqueous buffer solutions exposed to cold atmospheric plasmas (CAPs). CAPs were generated by ionizing He gas shielded with variable N-2/O-2 mixtures. Thanks to ultramicroelectrodes protected against the high electric fields transported by the ionization waves of CAPs, the production of superoxide and several RONS was electrochemically directly detected in liquids during their plasma exposure. Complementarily, optical emissive spectroscopy (OES) was used to study the plasma phase composition and its correlation with the chemistry in the exposed liquid. The specific production of O-2(center dot-), a biologically reactive redox species, was analyzed by cyclic voltammetry (CV), in both alkaline (pH 11), where the species is fairly stable, and physiological (pH 7.4) conditions, where it is unstable. To understand its generation with respect to the plasma chemistry, we varied the shielding gas composition of CAPs to directly impact on the RONS composition at the plasma-liquid interface. We observed that the production and accumulation of RONS in liquids, including O(2)(center dot-)depends on the plasma composition, with N-2-based shieldings providing the highest superoxide concentrations (few 10s of micromolar at most) and of its derivatives (hundreds of micromolar). In situ spectroscopic and electrochemical analyses provide a high resolution kinetic and quantitative understanding of the interactions between CAPs and physiological solutions for biomedical applications. | ||||
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Publisher | Place of Publication | Editor | |||
Language | Wos | 000805334400013 | Publication Date | 2022-03-28 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0003-2700; 5206-882x | ISBN | Additional Links | UA library record; WoS full record | |
Impact Factor ![]() |
7.4 | Times cited | Open Access | OpenAccess | |
Notes | Approved | Most recent IF: 7.4 | |||
Call Number | UA @ admin @ c:irua:189093 | Serial | 7143 | ||
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Author | Kummamuru, N.B.; Verbruggen, S.W.; Lenaerts, S.; Perreault, P. | ||||
Title | Experimental investigation of methane hydrate formation in the presence of metallic packing | Type | A1 Journal article | ||
Year | 2022 | Publication | Fuel | Abbreviated Journal | Fuel |
Volume | 323 | Issue | Pages | 124269-10 | |
Keywords | A1 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) | ||||
Abstract | Clathrate hydrates gained significant attention as a viable option for large-scale storage of natural gas, primarily methane (CH4). Unlike employing the nanoconfinement for enhancing the nucleation sites and hydrate growth as in the porous materials, whose synthesis is often associated with high costs and poor batch reproducibility, a new approach for promoting CH4 hydrates using pure water (H2O) in an unstirred reactor packed with stainless steel beads (SSB) was proposed in this fundamental work, where the interstitial space between the beads was exploited for enhanced hydrate growth. SSB of two diameters, 5 mm and 2 mm, were used as. a packed bed to investigate their effects on CH4 hydrate formation at 273.65 K, 275.65 K, and 277.65 K with an initial pressure of 6 MPa. The thermal conductivity of SSB packing potentially aided hydrate growth by expelling the hydration heat, while, the results also revealed that driving force has a substantial impact on the rate of CH4 hydrate formation and gas uptake. The experiments conducted in both 5 mm and 2 mm SSB packed bed reactors showed a maximum gas uptake of 0.147 mol CH4/mol H2O at 273.65 K with water to hydrate conversion of 84.42% with no significant variation. The results established the promotion effect on the kinetics of CH4 hydrate formation in the unstirred reactor packed with 2 mm SSB due to the availability of more interstitial space offering multiple nucleation sites for CH4 hydrate by providing a larger specific surface area for H2O-CH4 reaction. Experiments with varying H2O content were also performed and the results showed that the water to hydrate conversion and rate of hydrate formation could be enhanced at a lower H2O content in a packed bed reactor. This study demonstrates that the use of costly or intricate porous materials can be made redundant, by exploiting the interstitial voids in packing of cheap and widely available SSB as a promising alternative material for enhancing the kinetics of artificial CH4 hydrate synthesis. | ||||
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Publisher | Place of Publication | Editor | |||
Language | Wos | 000799165400007 | Publication Date | 2022-04-27 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0016-2361 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor ![]() |
7.4 | Times cited | Open Access | OpenAccess | |
Notes | Approved | Most recent IF: 7.4 | |||
Call Number | UA @ admin @ c:irua:187830 | Serial | 7159 | ||
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Author | Khan, S.U.; Trashin, S.; Beltran, V.; Korostei, Y.S.; Pelmus, M.; Gorun, S.M.; Dubinina, T., V.; Verbruggen, S.W.; De Wael, K. | ||||
Title | Photoelectrochemical behavior of phthalocyanine-sensitized TiO₂ in the presence of electron-shuttling mediators | Type | A1 Journal article | ||
Year | 2022 | Publication | Analytical chemistry | Abbreviated Journal | Anal Chem |
Volume | 94 | Issue | 37 | Pages | 12723-12731 |
Keywords | A1 Journal article; Sustainable Energy, Air and Water Technology (DuEL); Antwerp Electrochemical and Analytical Sciences Lab (A-Sense Lab) | ||||
Abstract | Dye-sensitized TiO(2 )has found many applications for dye sensitized solar cells (DSSC), solar-to-chemical energy conversion, water/air purification systems, and (electro)chemical sensors. We report an electrochemical system for testing dye-sensitized materials that can be utilized in photoelectrochemical (PEC) sensors and energy conversion. Unlike related systems, the reported system does not require a direct electron transfer from semiconductors to electrodes. Rather, it relies on electron shuttling by redox mediators. A range of model photocatalytic materials were prepared using three different TiO2 materials (P25, P90, and PC500) and three sterically hindered phthalocyanines (Pcs) with electron-rich tert-butyl substituents (t-Bu4PcZn, t-Bu4PcAlCl, and t-Bu4PcH2). The materials were compared with previously developed TiO(2 )modified by electron-deficient, also sterically hindered fluorinated phthalocyanine F64PcZn, a singlet oxygen (O-1(2)) producer, as well as its metal-free derivative, F64PcH2. The PEC activity depended on the redox mediator, as well as the type of TiO2 and Pc. By comparing the responses of one-electron shuttles, such as K4Fe(CN)(4), and O-1(2)-reactive electron shuttles, such as phenol, it is possible to reveal the action mechanism of the supported photosensitizers, while the overall activity can be assessed using hydroquinone. t-Bu4PcAlCl showed significantly lower blank responses and higher specific responses toward chlorophenols compared to t-Bu4PcZn due to the electron-withdrawing effect of the Al3+ metal center. The combination of reactivity insights and the need for only microgram amounts of sensing materials renders the reported system advantageous for practical applications. | ||||
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Publisher | Place of Publication | Editor | |||
Language | Wos | 000855284300001 | Publication Date | 2022-09-12 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0003-2700; 5206-882x | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor ![]() |
7.4 | Times cited | Open Access | OpenAccess | |
Notes | Approved | Most recent IF: 7.4 | |||
Call Number | UA @ admin @ c:irua:190602 | Serial | 7190 | ||
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Author | Stuyck, W.; Bugaev, A.L.; Nelis, T.; de Oliveira-Silva, R.; Smolders, S.; Usoltsev, O.A.; Arenas Esteban, D.; Bals, S.; Sakellariou, D.; De Vos, D. | ||||
Title | Sustainable formation of tricarballylic acid from citric acid over highly stable Pd/Nb2O5.nH2O catalysts | Type | A1 Journal article | ||
Year | 2022 | Publication | Journal of catalysis | Abbreviated Journal | J Catal |
Volume | Issue | Pages | |||
Keywords | A1 Journal article; Electron microscopy for materials research (EMAT) | ||||
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Publisher | Place of Publication | Editor | |||
Language | Wos | 000792492100009 | Publication Date | 2022-02-17 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0021-9517 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor ![]() |
7.3 | Times cited | 5 | Open Access | OpenAccess |
Notes | Fonds Wetenschappelijk Onderzoek; Russian Science Foundation, 20-43-01015 ; KU Leuven, METU14/04 MK-5853.2021.1.2 ; | Approved | Most recent IF: 7.3 | ||
Call Number | EMAT @ emat @c:irua:186580 | Serial | 6954 | ||
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Author | Andersen, J.A.; Christensen, J.M.; Østberg, M.; Bogaerts, A.; Jensen, A.D. | ||||
Title | Plasma-catalytic ammonia decomposition using a packed-bed dielectric barrier discharge reactor | Type | A1 Journal article | ||
Year | 2022 | Publication | International Journal Of Hydrogen Energy | Abbreviated Journal | Int J Hydrogen Energ |
Volume | 47 | Issue | 75 | Pages | 32081-32091 |
Keywords | A1 Journal article; Engineering sciences. Technology; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | Plasma-catalytic ammonia decomposition as a method for producing hydrogen was studied in a packed-bed dielectric barrier discharge (DBD) reactor at ambient pressure and a fixed plasma power. The influence of packing the plasma zone with various dielectric materials, typically used as catalyst supports, was examined. At conditions (21 W, 75 Nml/min NH3) where an NH3 conversion of 5% was achieved with plasma alone, an improved decomposition was found when introducing dielectric materials with dielectric constants between 4 and 30. Of the tested materials, MgAl2O4 yielded the highest conversion (15.1%). The particle size (0.3-1.4 mm) of the MgAl2O4 packing was found to have a modest influence on the conversion, which dropped from 15.1% to 12.6% with increasing particle size. Impregnation of MgAl2O4 with different metals was found to decrease the NH3 conversion, with the Ni impregnation still showing an improved conversion (7%) compared to plasma-only. The plasma-assisted ammonia decomposition occurs in the gas phase due to micro-discharges, as evident from a linear correlation between the conversion and the frequency of micro-discharges for both plasma alone and with the various solid packing materials. The primary function of the solid is thus to facilitate the gas phase reaction by assisting the creation of micro-discharges. Lastly, insulation of the reactor to raise the temperature to 230 degrees C in the plasma zone was found to have a negative effect on the conversion, as a change from volume discharges to surface discharges occurred. The study shows that NH3 can be decomposed to provide hydrogen by exposure to a non-thermal plasma, but further developments are needed for it to become an energy efficient technology. (C)2022 The Author(s). Published by Elsevier Ltd on behalf of Hydrogen Energy Publications LLC. | ||||
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Publisher | Place of Publication | Editor | |||
Language | Wos | 000865421200012 | Publication Date | 2022-08-17 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0360-3199 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor ![]() |
7.2 | Times cited | Open Access | OpenAccess | |
Notes | Approved | Most recent IF: 7.2 | |||
Call Number | UA @ admin @ c:irua:191512 | Serial | 7191 | ||
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Author | De Backer, J.; Maric, D.; Zuhra, K.; Bogaerts, A.; Szabo, C.; Vanden Berghe, W.; Hoogewijs, D. | ||||
Title | Cytoglobin Silencing Promotes Melanoma Malignancy but Sensitizes for Ferroptosis and Pyroptosis Therapy Response | Type | A1 Journal article | ||
Year | 2022 | Publication | Antioxidants | Abbreviated Journal | Antioxidants |
Volume | 11 | Issue | 8 | Pages | 1548 |
Keywords | A1 Journal article; Pharmacology. Therapy; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT); Proteinscience, proteomics and epigenetic signaling (PPES) | ||||
Abstract | Despite recent advances in melanoma treatment, there are still patients that either do not respond or develop resistance. This unresponsiveness and/or acquired resistance to therapy could be explained by the fact that some melanoma cells reside in a dedifferentiated state. Interestingly, this dedifferentiated state is associated with greater sensitivity to ferroptosis, a lipid peroxidation-reliant, iron-dependent form of cell death. Cytoglobin (CYGB) is an iron hexacoordinated globin that is highly enriched in melanocytes and frequently downregulated during melanomagenesis. In this study, we investigated the potential effect of CYGB on the cellular sensitivity towards (1S, 3R)-RAS-selective lethal small molecule (RSL3)-mediated ferroptosis in the G361 melanoma cells with abundant endogenous expression. Our findings show that an increased basal ROS level and higher degree of lipid peroxidation upon RSL3 treatment contribute to the increased sensitivity of CYGB knockdown G361 cells to ferroptosis. Furthermore, transcriptome analysis demonstrates the enrichment of multiple cancer malignancy pathways upon CYGB knockdown, supporting a tumor-suppressive role for CYGB. Remarkably, CYGB knockdown also triggers activation of the NOD-, LRR- and pyrin domain-containing protein 3 (NLRP3) inflammasome and subsequent induction of pyroptosis target genes. Altogether, we show that silencing of CYGB expression modulates cancer therapy sensitivity via regulation of ferroptosis and pyroptosis cell death signaling pathways. | ||||
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Publisher | Place of Publication | Editor | |||
Language | Wos | 000846411000001 | Publication Date | 2022-08-10 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 2076-3921 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor ![]() |
7 | Times cited | Open Access | OpenAccess | |
Notes | Approved | Most recent IF: 7 | |||
Call Number | PLASMANT @ plasmant @c:irua:190686 | Serial | 7102 | ||
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Author | Spaeth, P.; Adhikari, S.; Heyvaert, W.; Zhuo, X.; Garcia, I.; Liz-Marzan, L.M.; Bals, S.; Orrit, M.; Albrecht, W. | ||||
Title | Photothermal circular dichroism measurements of single chiral gold nanoparticles correlated with electron tomography | Type | A1 Journal article | ||
Year | 2022 | Publication | ACS Photonics | Abbreviated Journal | Acs Photonics |
Volume | 9 | Issue | 12 | Pages | 3995-4004 |
Keywords | A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT) | ||||
Abstract | Chemically synthesized metal nanoparticles with morphological chiral features are known to exhibit strong circular dichroism. However, we still lack understanding of the correlation between morphological and chiroptical features of plasmonic nanoparticles. To shed light on that question, single nanoparticle experiments are required. We performed photothermal circular dichroism measurements of single chiral and achiral gold nanoparticles and correlated the chiroptical response to the 3D morphology of the same nanoparticles retrieved by electron tomography. In contrast to an ensemble measurement, we show that individual particles within the ensemble display a broad distribution of strength and handedness of circular dichroism signals. Whereas obvious structural chiral features, such as helical wrinkles, translate into chiroptical ones, nanoparticles with less obvious chiral morphological features can also display strong circular dichroism signals. Interestingly, we find that even seemingly achiral nanoparticles can display large g-factors. The origin of this circular dichroism signal is discussed in terms of plasmonics and other potentially relevant factors. | ||||
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Publisher | Place of Publication | Editor | |||
Language | Wos | 000884432100001 | Publication Date | 2022-11-08 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 2330-4022 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor ![]() |
7 | Times cited | 5 | Open Access | OpenAccess |
Notes | This work was supported by The Netherlands Organisation for Scientific Research (NWO) as part of the Open Technology Program (OTP, Project No. 16008) and by a Spinoza prize (M.O.) . W.A. acknowledges an Individual Fellowship funded by the Marie Sklodowska-Curie Actions (MSCA) in Horizon 2020 Program (Grant No. 797153, SOPMEN) . L.M.L.M. acknowledges funding from MCIN/AEI/10.13039/501100011033 (Grants PID2020-117779RB-I00 and MDM-2017-0720) . We thank Dr. Wolfgang L?fer for providing optical equipment. We also acknowledge the European Soft Matter Infrastructure (EUSMI: E201200468) . | Approved | Most recent IF: 7 | ||
Call Number | UA @ admin @ c:irua:192098 | Serial | 7331 | ||
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