Photocatalytic decomposition of organic contaminants by Bi2WO6 under visible light irradiation

被引：519
|
作者：
Tang, JW
Zou, ZG
Ye, JH
机构：
[1] NIMS, Ecomat Ctr, Tsukuba, Ibaraki 3050047, Japan
[2] Nanjing Univ, EEMC, Nanjing 210093, Peoples R China
[3] Natl Inst Adv Ind Sci & Technol, PCRC, Tsukuba, Ibaraki 3058565, Japan
来源：
CATALYSIS LETTERS | 2004年 / 92卷 / 1-2期
关键词：
Bi2WO6; photocatalyst; organic contaminants; visible light irradiation;
D O I：
10.1023/B:CATL.0000011086.20412.aa
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
An oxide photocatalyst Bi2WO6 with corner-shared WO6 octahedral layered structure was synthesized. Its band gap was determined to be 2.69 eV from UV - vis diffuse reflectance spectra. The photocatalyst showed not only the activity for photocatalytic O-2 evolution with the initial evolution rate of 2.0 mumol/h but also the activity of mineralizing both CHCl3 and CH3CHO contaminants under visible light irradiation. Meanwhile, wavelength dependence of CH3CHO decomposition was observed, which indicated that the photocatalytic activity of the photocatalyst was in good agreement with its light-absorption ability.
引用
收藏
页码：53 / 56
页数：4
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