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Rumyantseva, M.N.; Vladimirova, S.A.; Vorobyeva, N.A.; Giebelhaus, I.; Mathur, S.; Chizhov, A.S.; Khmelevsky, N.O.; Aksenenko, A.Y.; Kozlovsky, V.F.; Karakulina, O.M.; Hadermann, J.; Abakumov, A.M.; Gaskov, A.M. |
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Title |
p -CoO x / n -SnO 2 nanostructures: New highly selective materials for H 2 S detection |
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A1 Journal article |
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Year |
2017 |
Publication |
Sensors and actuators : B : chemical |
Abbreviated Journal |
Sensor Actuat B-Chem |
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Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
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Abstract |
Nanostructures p-CoOx/n-SnO2 based on tin oxide nanowires have been prepared by two step CVD technique and characterized in detail by XRD, XRF, XPS, HAADF-STEM imaging and EDX-STEM mapping. Depending on the temperature of decomposition of cobalt complex during the second step of CVD synthesis of nanostructures cobalt oxide forms a coating and/or isolated nanoparticles on SnO2 nanowire surface. It was found that cobalt presents in +2 and +3 oxidation states. The measurements of gas sensor properties have been carried out during exposure to CO (14 ppm), NH3 (21 ppm), and H2S (2 ppm) in dry air. The opposite trends were observed in the effect of cobalt oxide on the SnO2 gas sensitivity when detecting CO or NH3 in comparison to H2S. The decrease of sensor signal toward CO and NH3 was attributed to high catalytic activity of Co3O4 in oxidation of these gases. Contrary, the significant increase of sensor signal in the presence of H2S was attributed to the formation of metallic cobalt sulfide and removal of the barrier between p-CoOx and n-SnO2. This effect provides an excellent selectivity of p-CoOx/n-SnO2 nanostructures in H2S detection. |
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000414151800068 |
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2017-08-17 |
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0925-4005 |
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UA library record; WoS full record; WoS citing articles |
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Impact Factor |
5.401 |
Times cited |
13 |
Open Access |
Not_Open_Access: Available from 10.10.2019
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Notes |
ERA-Net.Plus, 096 FONSENS ; |
Approved |
Most recent IF: 5.401 |
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Call Number |
EMAT @ emat @c:irua:145926 |
Serial |
4710 |
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Author |
Zanaga, D. |
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Title |
Advanced algorithms for quantitative electron tomography |
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Doctoral thesis |
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Year |
2017 |
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Doctoral thesis; Electron microscopy for materials research (EMAT) |
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Most recent IF: NA |
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Call Number |
UA @ lucian @ c:irua:146571 |
Serial |
4736 |
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Author |
Dabaghmanesh, S. |
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Title |
Atomistic modeling of the structural and electronic properties of Cr-based oxides and their potential application as TCO materials |
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Doctoral thesis |
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2017 |
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Doctoral thesis; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
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Most recent IF: NA |
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Call Number |
UA @ lucian @ c:irua:146070 |
Serial |
4738 |
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Author |
García Sánchez, C. |
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Title |
Quantifying inflow uncertainties for CFD simulations of dispersion in the atmospheric boundary layer |
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Doctoral thesis |
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2017 |
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Doctoral thesis; Electron microscopy for materials research (EMAT) |
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Most recent IF: NA |
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Call Number |
UA @ lucian @ c:irua:146045 |
Serial |
4748 |
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Author |
Bladt, E. |
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Title |
Two- and three-dimensional transmission electron microscopy of colloidal nanoparticles : from struture to composition |
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Doctoral thesis |
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2017 |
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Doctoral thesis; Electron microscopy for materials research (EMAT) |
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Most recent IF: NA |
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Call Number |
UA @ lucian @ c:irua:146083 |
Serial |
4756 |
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Author |
Mirzakhani, M. |
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Title |
Electronic properties and energy levels of graphene quantum dots |
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Doctoral thesis |
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Year |
2017 |
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Doctoral thesis; Condensed Matter Theory (CMT) |
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Most recent IF: NA |
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Call Number |
UA @ lucian @ c:irua:147179 |
Serial |
4781 |
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Author |
Aierken, Y. |
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Title |
First-principles studies of novel two-dimensional materials and their physical properties |
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Doctoral thesis |
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2017 |
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Doctoral thesis; Condensed Matter Theory (CMT) |
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Most recent IF: NA |
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Call Number |
UA @ lucian @ c:irua:147503 |
Serial |
4874 |
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Author |
van den Bos, K.H.W. |
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Title |
Quantitative atomic resolution transmission electron microscopy for heterogeneous nanomaterials |
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Doctoral thesis |
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2017 |
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Doctoral thesis; Electron microscopy for materials research (EMAT) |
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Most recent IF: NA |
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Call Number |
UA @ lucian @ c:irua:147953 |
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4892 |
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Author |
Belov, I. |
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Title |
Plasma-assisted conversion of carbon dioxide |
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Doctoral thesis |
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2017 |
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Doctoral thesis; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
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no |
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Call Number |
UA @ admin @ c:irua:146275 |
Serial |
8387 |
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