• 文献标题:   Photocatalytic and electrochemical performance of three-Dimensional reduced graphene Oxide/WS2/Mg-doped ZnO composites
  • 文献类型:   Article
  • 作  者:   YU WW, CHEN X, MEI W, CHEN CS, TSANG YH
  • 作者关键词:   reduced graphene oxide, ws2 nanosheet, synergistic effect, photocatalytic propertie, electrochemical performance
  • 出版物名称:   APPLIED SURFACE SCIENCE
  • ISSN:   0169-4332 EI 1873-5584
  • 通讯作者地址:   Changsha Univ Sci Technol
  • 被引频次:   34
  • DOI:   10.1016/j.apsusc.2016.12.138
  • 出版年:   2017

▎ 摘  要

To improve the dispersion of reduced graphene oxide and enhance the photocatalytic property of reduced graphene oxide/Mg-doped ZnO composites (rGMZ), the reduced graphene oxide/WS2/Mg-doped ZnO composites (rGWMZ) were prepared by electrostatic self-assembly and coprecipitation methods. The effects of mass ratio of WS2 nanosheets to reduced graphene oxide (WS2/rGO wt.%) and calcination temperature on the photocatalytic and electrochemical property of rGWMZ composites were investigated. Experimental results showed that the photocatalytic efficiency of rGWMZ composites is three-fold compared with that of rGMZ composites when the WS2/rGO wt.% is 20.8% and calcination temperature is 500 degrees C, in which the degradation ratio Rhodamin B (RhB) can reach 95% within 15 min under the UV light and 90% within 90 min under simulated solar light. In addition, the rGWMZ show larger capacitance and smaller resistance than rGMZ. The enhancement for photocatalytic activity and electrochemical performance of rGWMZ is ascribed to improving the specific surface area, electrical conductivity and electronic storage capability because of the synergistic effect of rGO and WS2 nanosheets. (C) 2016 Elsevier B.V. All rights reserved.