Enhanced Photocatalytic H_(2)-production Activity of CdS Nanoflower using Single Atom Pt and Graphene Quantum Dot as Dual Cocatalysts

作     者：Yi Yang Jinsong Wu Bei Cheng Liuyang Zhang Ahmed Abdullah Al-Ghamdi Swelm Wageh Youji Li Yi Yang;Jinsong Wu;Bei Cheng;Liuyang Zhang;Ahmed Abdullah Al-Ghamdi;Swelm Wageh;Youji Li

作者机构：State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingNanostructure Research Centre(NRC)Wuhan University of TechnologyWuhan 430070China Laboratory of Solar FuelFaculty of Materials Science and ChemistryChina University of GeosciencesWuhan 430074China Department of PhysicsFaculty of ScienceKing Abdulaziz UniversityJeddah 21589Saudi Arabia College of Chemistry and Chemical engineeringJishou UniversityJishouHunan 416000China 

出 版 物：《Chinese Journal of Structural Chemistry》 (结构化学（英文）)

年 卷 期：2022年第41卷第6期

页      面：6-14页

核心收录：

学科分类：081702[工学-化学工艺] 081704[工学-应用化学] 081705[工学-工业催化] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070304[理学-物理化学(含∶化学物理)] 0703[理学-化学] 

基　　金：supported by the National Key Research and Development Program of China(2018YFB1502001) National Natural Science Foundation of China(NSFC)(Nos.51872220,51961135303,51932007,U1905215,21871217 and 52073223) Deanship of Scientific Research(DSR)at King Abdulaziz University,Jeddah(No.RG-72-130-42) 

主　　题：hierarchical nanostructure single-atom catalysts graphene quantum dots CdS nanosheets hydrogen production 

摘      要：Single-atom catalysts have high catalytic activity due to their unique quantum size effects and optimal atom ***,visi-ble-light-responsive photocatalysts were designed by coupling CdS with graphene quantum dots(GQDs)and platinum single atoms(PtSAs).GQDs and PtSAs were successively loaded on ultrathin CdS nanosheets through freeze-drying and in-situ photocatalytic *** synergistic effect between PtSAs and GQDs results in superior photocatalytic activity with a hydrogen production rate of 13488μmol h^(-1)g^(-1)as well as the maximum apparent quantum efficiency(AQE)of 35.5%in lactic acid aqueous solution,which is 62 times higher than that of pristine CdS(213μmol g^(-1)h^(-1)).The energy conversion efficiency is ca.13.05%.As a photosensitizer and an electron reservoir,GQDs can not only extend the light response of CdS to the visible-light region(400-800 nm),but also promotes the separation of photoinduced electron-hole ***,PtSAs,with unique electronic and geometric features,can provide more efficient proton reduction *** finding provides an effective strategy to remarkably improve the photocatalytic H_(2) production performance.