MoS2/ZnIn2S4composites with MoS2anchored on the surface of ZnIn2S4microspheres were synthesized by a two‐step hydrothermal process.The obtained samples were characterized by X‐ray diffraction,field emission scanning...MoS2/ZnIn2S4composites with MoS2anchored on the surface of ZnIn2S4microspheres were synthesized by a two‐step hydrothermal process.The obtained samples were characterized by X‐ray diffraction,field emission scanning electron microscopy,energy dispersive X‐ray spectroscopy,high‐resolution transmission electron microscopy,X‐ray photoelectron spectroscopy,Raman spectroscopy,ultraviolet–visible diffuse reflectance absorption spectroscopy,nitrogen adsorption–desorption measurements,photoluminescence spectroscopy,and photoelectrochemical tests.The influence of the loading of MoS2on the photocatalytic H2evolution activity was investigated using lactic acid as a sacrificial reagent.A H2evolution rate of343μmol/h was achieved under visible light irradiation over the1wt%MoS2/ZnIn2S4composite,corresponding to an apparent quantum efficiency of about3.85%at420nm monochromatic light.The marked improvement of the photocatalytic H2evolution activity compared with ZnIn2S4can be ascribed to efficient transfer and separation of photogenerated charge carriers and facilitation of the photocatalytic H2evolution reaction at the MoS2active sites.展开更多
基金supported by the National Natural Science Foundation of China(51302200)~~
文摘MoS2/ZnIn2S4composites with MoS2anchored on the surface of ZnIn2S4microspheres were synthesized by a two‐step hydrothermal process.The obtained samples were characterized by X‐ray diffraction,field emission scanning electron microscopy,energy dispersive X‐ray spectroscopy,high‐resolution transmission electron microscopy,X‐ray photoelectron spectroscopy,Raman spectroscopy,ultraviolet–visible diffuse reflectance absorption spectroscopy,nitrogen adsorption–desorption measurements,photoluminescence spectroscopy,and photoelectrochemical tests.The influence of the loading of MoS2on the photocatalytic H2evolution activity was investigated using lactic acid as a sacrificial reagent.A H2evolution rate of343μmol/h was achieved under visible light irradiation over the1wt%MoS2/ZnIn2S4composite,corresponding to an apparent quantum efficiency of about3.85%at420nm monochromatic light.The marked improvement of the photocatalytic H2evolution activity compared with ZnIn2S4can be ascribed to efficient transfer and separation of photogenerated charge carriers and facilitation of the photocatalytic H2evolution reaction at the MoS2active sites.
