Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/65804
Title: Photocatalytic and electrochemical performance of three-Dimensional reduced graphene Oxide/WS2/Mg-doped ZnO composites
Authors: Yu, W
Chen, X
Mei, W
Chen, C
Tsang, Y 
Keywords: Electrochemical performance
Photocatalytic properties
Reduced graphene oxide
Synergistic effect
WS2 nanosheet
Issue Date: 2017
Publisher: North-Holland
Source: Applied surface science, 2017, v. 400, p. 129-138 How to cite?
Journal: Applied surface science 
Abstract: 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 °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.
URI: http://hdl.handle.net/10397/65804
ISSN: 0169-4332
EISSN: 1873-5584
DOI: 10.1016/j.apsusc.2016.12.138
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