Improved visible light photocatalytic activity of WO3 through CuWO4 for phenol degradation

被引：31
|
作者：
Chen, Haihang
Xiong, Xianqiang
Hao, Linlin
Zhang, Xiao
Xu, Yiming [1 ]
机构：
[1] Zhejiang Univ, State key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2016年 / 389卷
关键词：
Tungsten oxide; Cupric tungstate; Photocatalysis; Charge transfer; TRANSITION-METAL TUNGSTATES; TITANIUM-DIOXIDE; WATER OXIDATION; PHOTODEGRADATION; IONS;
D O I：
10.1016/j.apsusc.2016.07.145
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：
Development of a visible light photocatalyst is challenging. Herein, we report a significant activity enhancement of WO3 upon addition of CuWO4. Reaction was carried out under visible light for phenol degradation in aqueous suspension in the presence of H2O2. A maximum reaction rate was observed at 1.0 wt% CuWO4, which was 2.1 and 4.3 times those measured with WO3 and CuWO4, respectively. Similar results were also obtained from the photocatalytic formation of OH radicals, and from the electrochemical reduction of O-2. A possible mechanism responsible for the improved activity of WO3 is proposed, involving the electron transfer from CuWO4 to WO3, followed by the reduction of H2O2 over WO3. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：491 / 495
页数：5
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