Study the photocatalysis activity of hydrothermal-synthesized BiVO4-graphene composite on methylene blue

被引：8
作者：
Cai, Xiang [1 ]
Zhang, Bing [2 ]
Shi, Lei [2 ]
Liu, Huidi [2 ]
Zhang, Jinglin [2 ]
Huang, Langhuan [2 ]
Tan, Shaozao [2 ]
机构：
[1] Guangdong Polytech, Dept Light Chem Engn, Foshan 528041, Peoples R China
[2] Jinan Univ, Dept Chem, Guangzhou 510632, Guangdong, Peoples R China
来源：
DESALINATION AND WATER TREATMENT | 2016年 / 57卷 / 14期
基金：
中国国家自然科学基金;
关键词：
Bismuth vanadate; Graphene; Photocatalysis; Visible light; Electron trapping; VISIBLE-LIGHT; TIO2-GRAPHENE NANOCOMPOSITES; HYDROGEN-PRODUCTION; GRAPHENE-OXIDE; GRAPHITE OXIDE; DEGRADATION; PERFORMANCE; REDUCTION; CATALYST;
D O I：
10.1080/19443994.2015.1008050
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
A hydrothermal synthesis method was developed to prepare graphene-supported bismuth vanadate (BiVO4) particle (BiVO4-graphene) using graphene oxide, Bi(NO3)(3)5H(2)O, and NH4VO3 as raw materials. The composite was characterized by various analytical methods, including X-ray powder diffraction, Fourier transform infrared spectroscopy, diffuse reflection spectra, transmission electron microscope, X-ray photoelectron emission spectroscopy, and fluorescence spectra. The photocatalytic activity of BiVO4-graphene composite was investigated by the degradation of methylene blue in an aqueous solution under visible light irradiation. It had been confirmed that the presence of graphene enhanced the photocatalytic activity of BiVO4 particle, and the BiVO4-1.0% graphene showed the best photocatalytic activity. The improved visible light activity of BiVO4-graphene was due to the enhancement of electron-hole separation by the electron trapping of graphene. Also, a possible mechanism was proposed to elucidate the role of graphene in BiVO4-graphene composite as a photocatalyst for degradation of organic pollutant.
引用
收藏
页码：6365 / 6371
页数：7
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