高等学校化学学报 ›› 2020, Vol. 41 ›› Issue (7): 1677-1683.doi: 10.7503/cjcu20200023

• 物理化学 • 上一篇    下一篇

盐酸后处理制备高效制氢光催化剂Zn2In2S5

彭绍琴,李紫琴,黄铭涛,李越湘*()   

  1. 南昌大学化学系, 南昌 330031
  • 收稿日期:2020-01-13 出版日期:2020-07-10 发布日期:2020-03-23
  • 通讯作者: 李越湘 E-mail:liyx@ncu.edu.cn
  • 基金资助:
    国家自然科学基金(21962010);国家重点研发计划项目(2018YFB1502004)

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)

摘要:

采用水热法制备了ZnIn2S4固溶体, 并通过用盐酸对其进行后处理获得了系列ZnmIn2Sm+3(m≥2, 整数)固溶体. 通过X射线衍射(XRD)、 扫描电子显微镜(SEM)、 透射电子显微镜(TEM)、 X射线光电子能谱(XPS)、 紫外-可见漫反射光谱(UV-Vis DRS)、 荧光光谱(PL)和电化学测试对催化剂的组成、 结构和性能进行了表征. 研究了系列固溶体可见光光催化制氢活性. 结果表明, ZnIn2S4固溶体经0.5 mol/L HCl处理后能转化为Zn2In2S5固溶体, 其制氢活性为ZnIn2S4固溶体的2.2倍, 并且具有良好的稳定性.

关键词: ZnmIn2Sm+3固溶体, 氢气, 盐酸后处理, 光催化

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

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