Regulating interfacial morphology and charge-carrier utilization of Ti_(3)C_(2)modified all-sulfide CdS/ZnIn_(2)S_(4)S-scheme heterojunctions for effective photocatalytic H_(2) evolution  

作　　者：Junxian Bai Weilin Chen Rongchen Shen Zhimin Jiang Peng Zhang Wei Liu Xin Li 

机构地区：[1]Institute of Biomass Engineering,Key Laboratory of Energy Plants Resource and Utilization,Ministry of Agriculture and Rural Affairs,South China Agricultural University,Guangzhou 510642,China [2]College of Materials and Energy,South China Agricultural University,Guangzhou 510642,China [3]State Centre for International Cooperation on Designer Low-Carbon and Environmental Materials(CDLCEM),School of Materials Science and Engineering,Zhengzhou University,Zhengzhou 450001,China

出　　处：《Journal of Materials Science & Technology》2022年第17期85-95,共11页材料科学技术（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.21975084 and 51672089);the Ding Ying Talent Project of South China Agricultural University for their support。

摘　　要：The separation efficiency of electrons and holes and the enhancement of the surface reductive reaction in the metal sulfide semiconductor photocatalysts are important factors in boosting photocatalytic H_(2)evolution from water.The control of both interface morphology and the charge-carrier utilization of metal sulfide-based photocatalysts can effectively improve the separation efficiency of electrons and holes and increase the surface reaction active sites,which are considered to be effective methods to improve the photocatalytic activity of semiconductors.Here,the Ti_(3)C_(2)(Mxene)modified all-sulfide 2D/2D Sscheme heterojunction Ti_(3)C_(2)/Zn In_(2)S_(4)(ZIS)/CdS composite material was firstly synthesized by a two-step solvothermal method.The formation of all-sulfide S-scheme heterojunction improves the efficiency of electron-hole separation.The intimate 2D/2D van der Waals structure provides a strong interaction force and a large contact area to enhance charge transfer.The addition of 2D Ti_(3)C_(2)forms the accumulation layer,reducing the recombination of electrons and holes.Under the synergistic promotion,the highest hydrogen production of the prepared Ti_(3)C_(2)/ZIS/CdS composite photocatalyst could reach 8.93 mmol/h/g.This work not only enriches the photocatalytic systems through integrating the ohmic junction and the 2D/2D all-sulfide S-scheme heterojunction,but also provides a satisfactory design strategy for engineering interfacial morphology and charge-carrier utilization.

关 键 词：S-scheme heterojunction Photocatalytic hydrogen evolution Ti_(3)C_(2)Mxene-based ohmic junction ZnIn_(2)S_(4)nanosheets 2D/2D van der Waals interfaces 

分 类 号：TQ116.2[化学工程—无机化工] O643.36[理学—物理化学] O644.1[理学—化学]