微波蚀刻法制备RGO-BiOCl/Bi_2WO_6异质结型催化剂及其催化性能  

Synthesis and photocatalytic activity of RGO-BiOCl/Bi_2WO_6 heterojunction photocatalyst by microwave etching method

作　　者：陈颖[1] 韩星月 梁宏宝[2] 梁宇宁[1] 高彦华[1] CHEN Ying;HAN Xingyue;LIANG Hongbao;LIANG Yuning;GAO Yanhua(Heilongjiang Provincial Key Laboratory of Chemical Engineering of Oil and Gas,Northeast Petroleum University,Daqing 163318,Heilongjiang,China;College of Mechanical Science and Engineering,Northeast Petroleum University,Daqing 163318,Heilongjiang,China)

机构地区：[1]东北石油大学石油与天然气化工省重点实验室,黑龙江大庆163318 [2]东北石油大学机械科学与工程学院,黑龙江大庆163318

出　　处：《化工学报》2018年第4期1758-1764,共7页CIESC Journal

基　　金：国家自然科学基金项目(51146008)~~

摘　　要：采用改进的Hummers法制备氧化石墨烯,以Bi(NO_3)_3·5H_2O、KCl、Na_2WO_4为原料,采用微波蚀刻法在其基础上负载BiOCl/Bi_2WO_6。通过X射线衍射(XRD)、扫描电镜(SEM)、比表面积测定仪(BET)、紫外-可见漫反射(UV-Vis)及透射电镜(TEM)等对所制备的催化剂进行表征。以RhB作为目标降解物,考察其光催化性能。结果表明,当RGO:RGO-BiOCl(质量比)为2%、Bi_2WO_6:RGO-BiOCl/Bi_2WO_6(摩尔比)为50%,降解率可达94.6%,远高于纯BiOCl。The oxidized graphite was prepared by modified Hummers method for oxidation treatment of natural graphite.BiOCl/Bi2WO6 catalyst was loaded on RGO by microwave and chemical etching with Bi(NO3)3·5H2O,KCl and Na2WO4.The morphology and structure of as-synthesized products were characterized by X-ray powder diffraction(XRD),scanning electron microscope(SEM),Brunauer-Emmett-Teller(BET),UV-visible diffuse reflectance spectra(UV-Vis DRS)and transmission electron microscope(TEM).Rhodamine B solution was used as target degradation to investigate the photocatalytic performance of catalyst.The results illustrated that RGO:RGOBiOCl(mass ratio)was 2%,Bi2WO6:RGO-BiOCl/Bi2WO6(molar ratio)was 50%,and the degradation rate reached as high as 94.6%,compared to pure BiOCl.

关 键 词：氧化石墨烯 BiOCl/Bi2WO6 异质结 光化学 降解 催化 

分 类 号：O643[理学—物理化学]