Preparation and properties of CuO/ZnxCd1-xS photocatalysts

被引：7
|
作者：
Zhang, Di [1 ]
Liu, Fu-sheng [1 ,2 ]
Wang, Sheng [3 ]
Li, Zhen [1 ]
Qian, Qian-qian [3 ]
Wang, Xiao-qing [1 ]
Si, Gao-li [1 ]
机构：
[1] Nanjing Forestry Univ, Dept Chem & Mat Sci, Coll Sci, Nanjing 210037, Jiangsu, Peoples R China
[2] Nanjing Forestry Univ, Inst Mat Phys & Chem, Nanjing 210037, Jiangsu, Peoples R China
[3] Nanjing Tech Univ, Coll Chem & Chem Engn, Nanjing 210009, Jiangsu, Peoples R China
来源：
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING | 2015年 / 40卷
基金：
中国国家自然科学基金;
关键词：
Photocatalysis; ZnxCd1-xS; Methyl orange; Degradation; VISIBLE-LIGHT IRRADIATION; METHYL-ORANGE DEGRADATION; ORGANIC-DYE DEGRADATION; TRAP MASS-SPECTROMETRY; H-2; PRODUCTION; COMPOSITE PHOTOCATALYST; EFFICIENT DEGRADATION; ACTIVITY ENHANCEMENT; HYDROGEN-PRODUCTION; ZNO NANOPOWDERS;
D O I：
10.1016/j.mssp.2015.06.043
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
CuO/Zn0.384Cd0.616S was prepared by an impregnation method, and its structure and optical properties were characterized using X-ray diffraction, scanning electron microscopy, ultraviolet-visible diffuse-reflectance spectroscopy and X-ray photoelectron spectroscopy and their photocatalytic activity were evaluated based on photocatalytic degradation of methyl orange (MO) solution under visible light. The effects on photocatalytic degradation of the catalyst amount, MO concentration and pH were investigated. And the mechanism for enhancing the photocatalytic activity was also discussed. The results indicated that 0.5 wt% CuO/Zn0.384Cd0.616S showed the highest photocatalytic activity among the prepared samples. The mechanism for the degradation of MO occurring on the CuO/Zn0.384Cd0.616S surface differs from that on ZnxCd1-xS surfaces. The catalytic reaction under visible-light irradiation followed pseudo-first-order kinetics. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：602 / 612
页数：11
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