Preparation and Characterization of Divanadium Pentoxide Nanowires inside SBA-15 Channels

Autor:	Songhai Xie, Si‐Yi Zhang, Song-Lin Jin, Kake Zhu, Biao Zhang, Heyong He, Bin Yue
Rok vydání:	2010
Předmět:	Silanol chemistry.chemical_compound chemistry Chemical engineering Thermal decomposition Inorganic chemistry Nanowire Pentoxide Sorption Orthorhombic crystal system General Chemistry Mesoporous silica Vapor–liquid–solid method
Zdroj:	Chinese Journal of Chemistry. 22:33-37
ISSN:	1001-604X
Popis:	One-dimensional V2O5 nanowires have been synthesized inside the channels of mesoporous silica SBA-15 through chemical approach, which involves aminosilylation of silanol groups on the silica surface, anchoring of isopoly acid, H6V10O28. by neutralization of basic amine groups, and thermal decomposition. The formation and physicochemical properties of the nanowires were monitored and studied by TG-DTA, variable temperature in situ XRD, TEM, N2 sorption measurements and UV-Vis DRS. The results indicate that V2O5 nanowires formed within SBA-15 channels belong to orthorhombic polycrystal domains. The oxygen-to-metal charge transfer band of V2O5 nanowires shows a blue shift in comparison with bulk V2O5, which clearly exhibits the quantum size effect of nanowires.
Databáze:	OpenAIRE
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