Chemical Journal of Chinese Universities ›› 2020, Vol. 41 ›› Issue (7): 1677-1683.doi: 10.7503/cjcu20200023

• Physical Chemistry • Previous Articles     Next Articles

Preparation of Zn2In2S5 Photocatalyst by Post-treatment with Hydrochloric Acid for Effective Photocatalytic Hydrogen Evolution

PENG Shaoqin,LI Ziqin,HUANG Mingtao,LI Yuexiang*()   

  1. Department of Chemistry, Nanchang University, Nanchang 330031, China
  • Received:2020-01-13 Online:2020-07-10 Published:2020-03-23
  • Contact: Yuexiang LI E-mail:liyx@ncu.edu.cn
  • Supported by:
    † National Natural Science Foundation of China(21962010);National Key Research and Development Program of China(2018YFB1502004)

Abstract:

ZnIn2S4 solid solutions were prepared by hydrothermal method and a series of ZnmIn2Sm+3(m=1—5, integer) solid solutions were obtained by post-treatment of ZnIn2S4 with HCl. The composition, structure and performance of the catalysts were characterized by X-ray diffraction(XRD), scanning electron microscopy(SEM), transmission electron microscopy(TEM), X-ray photoelectron spectroscopy(XPS), UV-Visible diffuse reflective spectroscopy(UV-Vis DRS), photoluminescence(PL) spectroscopy and electrochemical tests. The visible light photocatalytic hydrogen production activity of a series of solid solutions was studied. It is found that ZnIn2S4 solid solution can be converted into Zn2In2S5 solid solution after treatment with 0.5 mol/L HCl, and its hydrogen production activity is the highest, which is 2.2 times that of ZnIn2S4 solid solution. The catalyst also has good stability.

Key words: ZnmIn2Sm+3 solid solution, Hydrogen, HCl post-treatment, Photocatalysis

CLC Number: