Pt-induced electrochemical growth of ZnO rods onto reduced graphene oxide for enhanced photodegradation performance  

作　　者：Xuewen Wang Xiaojie Yao 

机构地区：[1]Department of Chemistry,Nanchang University [2]Information Engineering School,Nanchang University

出　　处：《Chinese Science Bulletin》2014年第18期2208-2213,共6页

基　　金：supported by the National Natural Science Foundation of China (51202105,21203088,21263016);Science and Technology Project of Education Department of Jiangxi Province (GJJ12046);the Opening Project of State Key Laboratory of High Performance Ceramics and Superfine Microstructure (SKL201205SIC);support from the Institute of Metal Research,Chinese Academy of Sciences

摘　　要：Photodegradation of organic pollutants over semiconductor catalysts is considered to be a viable method for wastewater treatment.Of the different semiconductor photocatalysts,ZnO has been widely used for the photodegradation of organic pollutants.Meanwhile,graphene is being actively investigated as a cocatalyst for such processes.The high carrier transport rate of graphene can favor the transfer of photoexcited electrons,while the increased specific surface area provides adsorption sites for the organic effluent molecules,thereby improving overall photocatalytic activity.Therefore,in this study,Pt–ZnO–reduced graphene oxide(RGO)rods with different RGO contents are synthesize during a novel Pt-induced electrochemical method,where ZnjZnO acts as the anode and PtjH2OjH2acts as the cathode.The photocatalytic degradation activity of the Pt–ZnO–RGO rods is remarkably improved under UV–visible light irradiation,with the optimum loading RGO content of 1 wt%.Photodegradation of organic pollutants over semiconductor catalysts is considered to be a viable method for wastewater treatment. Of the different semiconductor photocatalysts, ZnO has been widely used for the photodeg- radation of organic pollutants. Meanwhile, graphene is being actively investigated as a cocatalyst for such processes. The high carrier transport rate of graphene can favor the transfer of photoexcited electrons, while the increased specific surface area provides adsorption sites for the organic effluent mole- cules, thereby improving overall photocatalytic activity. Therefore, in this study, Pt-ZnO-reduced graphene oxide （RGO） rods with different RGO contents are synthesize dur- ing a novel Pt-induced electrochemical method, where Zn]ZnO acts as the anode and PtlHzOIH2 acts as the cathode. The photocatalytic degradation activity of the Pt-ZnO-RGO rods is remarkably improved under UV-visible light irradia- tion, with the optimum loading RGO content of 1 wt%.

关 键 词：氧化锌 氧化物 光降解性能 电化学生长 石墨 诱导 半导体光催化剂 光催化降解 

分 类 号：O643.36[理学—物理化学]