Enhanced sunlight-driven photocatalytic property of Mg-doped ZnO nanocomposites with three-dimensional graphene oxide/MoS2nanosheet composites

Chuansheng Chen, Wei Mei, Weiwei Yu, Xi'An Chen, Longhui Zeng, Yuen Hong Tsang, Zisheng Chao, Xiaoyan Liu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

10 Citations (Scopus)

Abstract

Graphene oxide (GO) has been the focus of attention as it can enhance the photocatalytic activity of semiconductors due to its large specific surface area and remarkable optical and electronic properties. However, the enhancing effect is not ideal because of its easy self-agglomeration and low electronic conductivity. To improve the enhancing effect of GO for ZnO, three-dimensional GO/MoS2composite carriers (3D GOM) were prepared by electrostatic interactions and then, Mg-doped ZnO nanoparticles (MZ) were supported on the surface of 3D GOM by utilizing the layer-by-layer assembly method. Compared with GO/Mg-ZnO composite (GOMZ), the resultant three-dimensional GO/MoS2/Mg-ZnO composite (GOMMZ) exhibited excellent photocatalytic performance due to the effective synergistic effect between GO and MoS2sheet, and its degradation rate was nearly 100% within 120 min of exposure to visible light; this degradation rate was nearly 8 times higher than that of the GOMZ composite. Moreover, the introduction of the MoS2sheet intensified the photocurrent density of the GOMZ composite and endowed it with optical memory ability.
Original languageEnglish
Pages (from-to)17399-17409
Number of pages11
JournalRSC Advances
Volume8
Issue number31
DOIs
Publication statusPublished - 1 Jan 2018

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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