In situ construction of Ni-based N doped porous carbon induced by sulfurization or phosphorization for synergistically enhanced photo/electrocatalytic hydrogen evolution  

作　　者：Desheng Xu Jun Ke Hengyu Liu Yafan Bi Jie Liu 

机构地区：[1]School of Chemistry and Environmental Engineering,Wuhan Institute of Technology,Wuhan 430205,China [2]Department of Environmental Science&Engineering,North China Electric Power University,Baoding 071003,China

出　　处：《Journal of Materials Science & Technology》2024年第12期66-78,共13页材料科学技术（英文版）

基　　金：Knowledge Innovation Program of Wuhan-Shuguang Project(No.2022020801020366);Science Research Foundation of Wuhan Institute of Technology(No.K201939);Innovative Team program of Natural Science Foundation of Hubei Province(No.2021CFA032);J.Liu thanks to the support of the Natural Science Foundation of Hebei Province(No.E2022502071);Fundamental Research Universities(No.2022MS110).

摘　　要：Herein,two novel 3D porous Ni-based N doped carbon heterojunctions(NiS_(2)@NC or Ni_(2)P@NC)were suc-cessfully prepared through in situ carbonization and sulfurization or phosphorization by using flower-like Ni-based zeolite imidazolium framework as a precursor.Physiochemical and photoelectrochemical prop-erties were investigated to explore photoinduced charge separation and transfer in the heterojunction.Meanwhile,the photo/electrocatalytic hydrogen evolution performances were evaluated systematically.In contrast to the controlled Ni-ZIF and Ni@NC composites,the expected flower-like NiS_(2)@NC compounds show significantly enhanced photo/electrocatalytic hydrogen evolution performances,which is 13.8 times that of Ni-ZIF and 1.8 times that of [e-mail],a phosphorus-decorated composite(Ni_(2)P@NC)was synthesized for better comparison,which also displays apparently improved photo/electrocatalytic hydrogen evolution activities.The findings present that the synergistic effect of S doping and semicon-ducting NiS_(2) formation take responsibility for the enhancement of H_(2) generation over the NiS_(2)@NC hy-brids.This work can provide a new strategy to construct efficient ZIFs-based photo/electrocatalysts with high performance of H_(2) production.

关 键 词：Solar utilization Zeolite imidazolium framework Carbon DOPING HETEROJUNCTION Hydrogen evolution 

分 类 号：TQ116.21[化学工程—无机化工] TQ426