RGO/BiVO4复合光催化剂的EDTA辅助水热合成及表征

张鹏， 孙振海， 耿延玲*， 匡少平

（青岛科技大学 化学与分子工程学院，山东 青岛 266042）

 摘要： 以EDTA为络合剂，采用水热法制备了RGO/BiVO4复合光催化剂。利用X射线衍射（XRD）、Fourier变换红外光谱(FTIR)、扫描电子显微镜(SEM)、紫外可见漫反射光谱(DRS)对产物进行了表征；并以亚甲基蓝为目标降解物，分析了复合光催化剂在可见光下的光催化活性。结果表明，RGO的加入有效提高了BiVO4的可见光光催化性能。当RGO的质量分数为15% 时，复合光催化剂的可见光催化活性最高，经100 min的可见光照射，亚甲基蓝的降解率达到95%。

 关键词： 石墨烯； 钒酸铋； 水热法； 光催化剂

中图分类号： O 614                          文献标志码： A

EDTAassisted Hydrothermal Synthesis and Photocatalytic Property of RGO/BiVO4 Composites

ZHANG Peng, SUN Zhenhai, GENG Yanling, KUANG Shaoping

(College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China)

Abstract：Reduced graphene oxide/BiVO4 (RGO/BiVO4) photocatalysts were prepared by a hydrothermal process using ethylene diamine tetraacetic acid (EDTA) as chelating agent. The asprepared samples were characterized by Xray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy and UVVis diffuse reflectance spectroscopy, respectively. The photocatalytic activity of RGO/BiVO4 photocatalyst was investigated via degradation of methyl blue (MB) under visiblelight irradiation. The results indicate that the visiblelight photocatalytic activity of RGO/BiVO4 is enhanced in the presence of RGO. The RGO/BiVO4 with graphene oxide (GO) of 15% (in mass) exhibited a superior photocatalytic activity, which the degradation rate of MB reached 95% after visible light irradiation for 100 min.

Key words：reduced graphene oxide(RGO); bismuth orthovanadate; hydrothermal method; photocatalyst

收稿日期：  20131213

作者简介： 张鹏（1989—），男，硕士研究生.               *通信联系人.