Preparation and photocatalytic performance of ZnO/ZnGa2O4 composite microspheres

被引：0
|
作者：
张丽 [1 ]
戴超华 [1 ]
张秀秀 [2 ]
刘又年 [3 ]
阎建辉 [1 ,2 ,3 ]
机构：
[1] College of Chemistry and Chemical Engineering,Hunan Institute of Science and Technology
[2] College of Chemical Engineering,Xiangtan University
[3] School of Chemistry and Chemical Engineering,Central South University
来源：
Journal of Central South University | 2016年 / 23卷 / 12期
基金：
中国国家自然科学基金;
关键词：
ZnO/ZnGa2O4; photocatalytic performance; microspheres; simulated sunlight;
D O I：
暂无
中图分类号：
O643.36 [催化剂];
学科分类号：
081705 ;
摘要：
ZnO/ZnGa2O4composite microspheres with heterojunction were successfully synthesized by one-pot hydrothermal method.These samples were characterized by TG/DTA,XRD,TEM,HRTEM,UV-vis DRS,FL and BET techniques.The results indicated the as-prepared samples showed better degree of crystalline and large specific surface area.The photocatalytic activity was evaluated by degradation of methyl orange with the concentration of 50 mg/L under the irradiation of simulated sunlight.The effects of molar ratio of Zn to Ga and calcination temperature on the photocatalytic activity were investigated in detail.The results showed that the highest photocatalytic degradation efficiency was observed at the molar ratio of Zn to Ga of 1:0.5 in the starting materials and the calcination temperature of 400 °C.The maximum photocatalytic degradation rate of MO was 97.1% within 60 min under the simulated sunlight irradiation,which is greatly higher than that of ZnO and ZnGa2O4.
引用
收藏
页码：3092 / 3099
页数：8
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