Solar Energy Materials and Solar Cells

Volume 160, February 2017, Pages 43-53

Graphene oxide/WS2/Mg-doped ZnO nanocomposites for solar-light catalytic and anti-bacterial applications

Chuansheng Chen， Weiwei Yu， Tiangui Liu， Shiyi Cao， YuenhongTsang

https://doi.org/10.1016/j.solmat.2016.10.020

Abstract

To improve the dispersion ofgrapheneoxide(GO) and form effective synergistic effect between GO and WS2nanosheets, the layer-by-layer electrostatic assembly method was used to synthesize three-dimensional (3D) reduced graphene oxide/WS2 nanosheet/Mg-dopedZnOnanohybrid (rGOWMZ). The enhancement ofphotocatalytic activityof a reduced graphene oxide/Mg-doped ZnO composites (rGOMZ) was achieved through introducing WS2nanoplate, in which the decomposition rate ofRhodamine B(RhB) reached 100% within 5 min. Furthermore, the rGOWMZ hybrids possess betteranti-bacterial activityin dark than rGOMZ hybrid. The enhanced sunlight-driven photocatalytic and anti-bacterial activities are mainly attributed to defect and efficientelectron-holeseparation.