CIESC Journal ›› 2018, Vol. 69 ›› Issue (4): 1758-1764.DOI: 10.11949/j.issn.0438-1157.20170765

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Synthesis and photocatalytic activity of RGO-BiOCl/Bi2WO6 heterojunction photocatalyst by microwave etching method

CHEN Ying1, HAN Xingyue1, LIANG Hongbao2, LIANG Yuning1, GAO Yanhua1   

  1. 1. Heilongjiang Provincial Key Laboratory of Chemical Engineering of Oil and Gas, Northeast Petroleum University, Daqing 163318, Heilongjiang, China;
    2. College of Mechanical Science and Engineering, Northeast Petroleum University, Daqing 163318, Heilongjiang, China
  • Received:2017-06-13 Revised:2017-12-06 Online:2018-04-05 Published:2018-04-05
  • Supported by:

    supported by the National Natural Science Foundation of China (51146008).

微波蚀刻法制备RGO-BiOCl/Bi2WO6异质结型催化剂及其催化性能

陈颖1, 韩星月1, 梁宏宝2, 梁宇宁1, 高彦华1   

  1. 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
  • 通讯作者: 梁宏宝
  • 基金资助:

    国家自然科学基金项目(51146008)。

Abstract:

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:RGO-BiOCl(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.

Key words: graphene oxide, BiOCl/Bi2WO6, heterojunction, photochemistry, degradation, catalysis

摘要:

采用改进的Hummers法制备氧化石墨烯,以Bi(NO33·5H2O、KCl、Na2WO4为原料,采用微波蚀刻法在其基础上负载BiOCl/Bi2WO6。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%、Bi2WO6:RGO-BiOCl/Bi2WO6(摩尔比)为50%,降解率可达94.6%,远高于纯BiOCl。

关键词: 氧化石墨烯, BiOCl/Bi2WO6, 异质结, 光化学, 降解, 催化

CLC Number: