• 文献标题:   Zinc oxide/graphene-like tungsten disulphide nanosheet photocatalysts: Synthesis and enhanced photocatalytic activity under visible-light irradiation
  • 文献类型:   Article
  • 作  者:   ZHANG XY, QIU FX, RONG XS, XU JC, RONG J, ZHANG T
  • 作者关键词:   photocatalyst, photocatalytic activity, degradation of dye
  • 出版物名称:   CANADIAN JOURNAL OF CHEMICAL ENGINEERING
  • ISSN:   0008-4034 EI 1939-019X
  • 通讯作者地址:   Jiangsu Univ
  • 被引频次:   2
  • DOI:   10.1002/cjce.23039
  • 出版年:   2018

▎ 摘  要

A highly efficient zinc oxide/graphene-like tungsten disulphide nanosheet (ZnO/WS2) was synthesized by a facile two-step method and characterized via XRD, SEM, TEM, XPS, BET, UV-Vis DRS, PL, etc. The photocatalytic activity of the ZnO/WS2 photocatalyst was estimated via the degradation of Rhodamine B (RhB) dye under 500W tungsten lamp radiation. Compared with ZnO, ZnO/WS2 photocatalyst presented a high degradation efficiency (95.71%) within 120min under visible-light irradiation, indicating that ZnO/WS2 photocatalyst had excellent photocatalytic activity. Photocatalytic reaction followed the first-order model kinetics, and ZnO/WS2 photocatalyst remained a relatively higher photocatalytic activity after four successive recycles, which verified that the structure of ZnO/WS2 photocatalyst was stable and had potential applications in the removal of dye wastewater. At last, the possible mechanism for the photocatalytic degradation of dyes over ZnO/WS2 photocatalysts was also discussed.