Study of preparation and photocatalytic activity of nanosized WO3 powder

被引：0
|
作者：
Wu, YQ [1 ]
Lu, GX [1 ]
Li, SB [1 ]
机构：
[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China
来源：
ACTA CHIMICA SINICA | 2004年 / 62卷 / 12期
关键词：
nanosized WO3 powder; photocatalytic activity; photocatalyst preparation;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The nanosized WO3 powders have been prepared by method of gas-liquid reaction between aqueous Na2WO4 and HCl in this work. The NMR, XRD and XPS techniques were used to characterize the catalyst. And the effects of calcination temperature and ethanol concentration on the particle size and photocatalytic activity of the photocatalysts were discussed in detail. The photoelectrochemical. actions of WO3 powders were studied by cyclic-voltammetry method as well. It was showed that gas-liquid reaction method is a simple method for nano-sized WO3 powder preparation. The size of WO3 powders is less than 100 nm. The beneficial effects of ethanol concentration on controlling WO3 powder size and particle dispersity were found, and the negative effects of higher calcination temperature on that were also indicated.
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页码：1134 / 1138
页数：5
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