Novel 3D-on-2D g-C_(3)N_(4)/AgIn_(x)S_(y)heterojunction photocatalyst for simultaneous and stoichiometric production of H_(2)and H_(2)O_(2)from water splitting under visible light  

作　　者：Hualin Jiang Wenxi Ye Huitao Zhen Xubiao Luo Vyacheslav Fominski Long Ye Pinghua Chen 

机构地区：[1]Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle,Nanchang Hangkong University,Nanchang 330063,China [2]College of life science,Jinggangshan University,Ji'an 343009,China [3]National Research Nuclear University MEPhI(Moscow Engineering Physics Institute),Moscow 115409,Russia

出　　处：《Chinese Chemical Letters》2025年第2期448-453,共6页中国化学快报(英文版)

基　　金：financially supported by the National Natural Science Foundation of China(Nos.52362012,42077162,51978323);Natural Science Foundation of Jiangxi Province(No.2022ACB203014);Major Discipline Academic and Technical Leaders Training Program of Jiangxi Province(Nos.20213BCJ22018,20232BCJ22048);Natural Science Project of the Educational Department in Jiangxi Province(No.GJJ2201121);Natural Science Foundation of Nanchang Hangkong University(No.EA202202256);Educational Reform Project of Jiangxi Province(No.JXYJG-2022-135);Nanchang Hangkong University Educational Reform Project(Nos.sz2214,sz2213,JY22017,KCPY1806)。

摘　　要：Photocatalytic H_(2)production from water splitting is a promising candidate for solving the increasing energy crisis and environmental issues.Herein we report a novel g-C_(3)N_(4)/Ag In_(x)S_(y)S-scheme heterojunction photocatalyst for water splitting into stoichiometric H_(2)and H_(2)O_(2)under visible light.The catalyst was prepared by depositing 3D bimetallic sulfide(Ag In_(x)S_(y))nanotubes onto 2D g-C_(3)N_(4)nanosheets.Owing to the special 3D-on-2D configuration,the photogenerated carriers could be rapidly transferred and effectively separated through the abundant interfacial heterostructures to avoid recombination,and therefore excellent performance for visible light-driven water splitting could be obtained,with a 24-h H_(2)evolution rate up to 237μmol g^(-1)h^(-1).Furthermore,suitable band alignment enables simultaneous H_(2)and H_(2)O_(2)production in a 1:1 stoichiometric ratio.H_(2)and H_(2)O_(2)were evolved on the conduction band of g-C_(3)N_(4)and on the valance band of Ag In_(x)S_(y),respectively.The novel 3D-on-2D configuration for heterojunction construction proposed in this work provided alternative research ideas toward photocatalytic reaction.

关 键 词：Photocatalysis Water splitting g-C3N4 Silver indium sulfide H_(2)production H_(2)O_(2)production 

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]