Synthesis, characterization, and photocatalytic properties of InVO4 nanoparticles

被引:87
作者
Zhang, LW [1 ]
Fu, HB [1 ]
Zhang, C [1 ]
Zhu, YF [1 ]
机构
[1] Tsing Hua Univ, Dept Chem, Beijing 100084, Peoples R China
基金
中国国家自然科学基金;
关键词
InVO4; nano-crystalline; photocatalysis; visible light;
D O I
10.1016/j.jssc.2005.12.003
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Nanosized InVO4 with orthorhombic structure was successfully synthesized at a relatively low calcination temperature of 600 degrees C by using an amorphous heteronuclear complex as precursor. The photocatalytic activity of InVO4 catalyst has been evaluated by the decomposition of formaldehyde (FAD) under UV light (lambda = 254 nm) and visible light irradiation (lambda > 420 nm). The as-synthesized InVO4 catalyst showed higher photocatalytic activity for the FAD decomposition compared to the sample prepared by the conventional solid-state reaction. The calculations of the electronic band structures indicated that the valence band was composed of the O 2p orbitals, whereas the conduction band was formed by the V 3d orbitals with a small contribution of the In 5s orbitals. The photocatalytic activity of the as-prepared sample is discussed on the basis of the electronic band structure and bulk material structure. (C) 2005 Elsevier Inc. All rights reserved.
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页码:804 / 811
页数:8
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