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\bibitem{Ribbens_etal2012} {\textquotedblleft}\textit{Systematic evaluation of thermal and mechanical stability of different commercial and synthetic photocatalysts in relation to their photocatalytic activity}{\textquotedblright}. Ribbens S, Beyers E, Schellens K, Mertens M, Ke X, Bals S, Van Tendeloo G, Meynen V, Cool P, Microporous and mesoporous materials: zeolites, clays, carbons and related materials \textbf{156}, 62 (2012).   http://doi.org/10.1016/j.micromeso.2012.01.036

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