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Preparation and Characterization of Divanadium Pentoxide Nanowires inside SBA‐15 Channels
Author(s) -
Zhu KaKe,
Yue Bin,
Xie SongHai,
Zhang SiYi,
Zhang Biao,
Jin SongLin,
He HeYong
Publication year - 2004
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.20040220109
Subject(s) - chemistry , nanowire , silanol , orthorhombic crystal system , mesoporous silica , thermal decomposition , chemical engineering , sorption , mesoporous material , nanotechnology , inorganic chemistry , crystallography , crystal structure , organic chemistry , catalysis , adsorption , materials science , engineering
One‐dimensional V 2 O 5 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, H 6 V 10 O 28 . 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, N 2 sorption measurements and UV‐Vis DRS. The results indicate that V 2 O 5 nanowires formed within SBA‐15 channels belong to orthorhombic polycrystal domains. The oxygen‐to‐metal charge transfer band of V 2 O 5 nanowires shows a blue shift in comparison with bulk V 2 O 5 , which clearly exhibits the quantum size effect of nanowires.