Boosted solar water oxidation steered by atomically precise alloy nanocluster  

作　　者：Xian Yan Huawei Xie Gao Wu Fang-Xing Xiao 

机构地区：[1]College of Materials Science and Engineering,Fuzhou University(New Campus),Minhou 350108,China [2]Department of Forensic Science,The Engineering Research Center,Fujian Police College,Fuzhou 350002,China [3]State Key Laboratory of Structural Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China

出　　处：《Chinese Chemical Letters》2025年第1期349-354,共6页中国化学快报(英文版)

基　　金：The support by the award Program for Minjiang scholar professorship is greatly acknowledged;financially supported by the National Natural Science Foundation of China(Nos.21703038,22072025);The financial support from State Key Laboratory of Structural Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Science is acknowledged(No.20240018)。

摘　　要：Atomically precise metal nanoclusters(NCs)have been deemed as a new generation of metal nanomaterials in the field of solar energy conversion due to their unique atomic stacking manner,quantum confinement effects,light-harvesting capability and multitude of active sites.Nonetheless,wide-spread application of monometallic NCs is blocked by the ultrashort carrier lifespan,uncontrollable charge transport pathway,and light-induced poor stability,impeding the construction of robust and stable metal NC-based photosystems.Herein,we report the fabrication of stable alloy(Au_(1-x)Pt_(x))NCs photosystem,for which tailor-made negatively charged l-glutathione(GSH)-capped Au_(1-x)Pt_(x)NCs as the building blocks are controllably deposited on the Bi VO_(4)(BVO)by a self-assembly approach for steering enhanced light absorption and interfacial charge transfer over alloy NCs-based photoanodes(Au_(1-x)Pt_(x)/BVO).The self-assembled Au_(1-x)Pt_(x)/BVO composite photoanode exhibits the significantly enhanced photoelectrochemical water oxidation performances compared with pristine BVO and Au_(x)/BVO photoanodes,which is caused by the Pt atom doping into the Au_(x)NCs for elevating photosensitivity and boosting the stability.The synergy of Au and Pt atoms in alloy NCs protects the gold core from rapid oxidation,improving the photostability and accelerating the surface charge transfer kinetics.Our work would significantly inspire ongoing interest in unlocking the charge transport characteristics of atomically precise alloy NCs for solar energy conversion.

关 键 词：Alloy nanoclusters SELF-ASSEMBLY Charge transport Photoanodes Photoelectrochemical water oxidation 

分 类 号：TG1[金属学及工艺—金属学]