Influence of Au content on photocatalytic performance of C@ZnO@Au hollow nanospheres

被引：17
作者：
Zhang, Zhihong [1 ]
Jin, Changqing [1 ]
Peterson, George [2 ]
Zhang, Chi [1 ]
Zhu, Kexin [1 ]
Wei, Yongxing [1 ]
Jian, Zengyun [1 ]
机构：
[1] Xian Technol Univ, Sch Mat & Chem Engn, Xian 710021, Shaanxi, Peoples R China
[2] Univ Nebraska, Dept Mech & Mat Engn, W342NH, Lincoln, NE 68588 USA
来源：
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2018年 / 230卷
基金：
中国国家自然科学基金;
关键词：
ZnO; Au; Heterojunction; Hollow spheres; Templates; Photocatalysis; DOPED ZNO; NANOCOMPOSITES; ENHANCEMENT; WATER;
D O I：
10.1016/j.mseb.2017.12.027
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Mesoporous C@ZnO@Au, hollow Spheres were synthesized through a stepwise method. The photocatalytic activities of the samples to RhB under UV irradiation were investigated. The sample with a 1/1000 mol ratio of Au/ZnO was found to have the best photocatalytic activity, which is far better than P25. The improved performance could come from the larger specific area induced by mesoporous hollow nanostructure, enhanced light absorption, or improved photogenerated electron-hole pair separation. Sample performance is a function of Au content. Too much or too little Au content decreases sample performance. The changes in performance according to Au content are a result of various competing mechanisms. This work serves to help us to better understand the important roles of Au content in the fabricated nano-heterojunction catalysts and also provide us with a feasible route to improve UV photocatalytic activities of ZnO and other metal oxides.
引用
收藏
页码：24 / 30
页数：7
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