Ultra-fine Cu clusters decorated hydrangea-like titanium dioxide for photocatalytic hydrogen production  

作　　者：Ya-Jie Feng Yang Wang Kai-Wen Wang Jiang-Ping Ma You-Yu Duan Jie Liu Xu Lu Bin Zhang Guo-Yu Wang Xiao-Yuan Zhou 

机构地区：[1]College of Physics and State Key Laboratory of Coal Mine Disaster Dynamics and Control,Chongqing University,Chongqing 401331,China [2]Chongqing Institute of Green and Intelligent Technology,Chinese Academy of Sciences,Chongqing 400722,China [3]Institute of Microstructure and Properties of Advanced Materials,Beijing University of Technology,Beijing 100124,China [4]Analytical and Testing Center,Chongqing University,Chongqing 401331,China

出　　处：《Rare Metals》2022年第2期385-395,共11页稀有金属（英文版）

基　　金：This work was financially supported by the National Natural Science Foundation of China(Nos.11874356,11904039,51772035 and 52071041);the Project for Fundamental and Frontier Research in Chongqing(Nos.cstc2019jcyjjqX0002 and cstc2020jcyj-msxmX0777);the Fundamental Research Funds for the Central Universities(No.106112016CDJZR308808).The work conducted at Chongqing Institute of Green and Intelligent Technology(Chinese Academy of Sciences)is also supported by Key Research Program of Frontier Sciences,CAS(No.QYZDB-SSWSLH016).

摘　　要：Hydrogen,with the merits of zero emissions and high energy density,is one of the promising green energy sources.Seeking for high efficiency and low-cost catalysts is one of the key issues for hydrogen evolution and its practical applications.Nano-structured metal cocatalysts are widely used to improve the photocatalytic performance via surface electronic structure/properties optimization of the catalyst.Herein,we report ultra-fine(*1 nm)Cu clusters decorated hydrangea-like TiO_(2)systems for photocatalytic hydrogen evolution.The pristine hydrangea-like TiO_(2)support shows a promising performance of hydrogen evolution(1.8 mmol·h^(-1)·g^(-1)),which is*10.7 times higher than that of the commercial P25(168 lmol·h^(-1)·g^(-1)).After ultra-fine Cu clusters decoration,a maximal hydrogen evolution performance(3.7 mmol·h^(-1)·g^(-1))is achieved in the optimized system 6Cu–TiO_(2)(6 wt%).Experimental and theoretical studies demonstrate that the ultra-fine Cu clusters decoration could promote the charge separation and transfer process effectively.The Cu clusters also act as reaction sites for reduction of H_(2)O to H2.These results are of great importance for the study of Cu-based co-catalyst systems and also shed light on the development of other non-noble metal co-catalysts in photocatalysis hydrogen evolution.

关 键 词：Photocatalysis Hydrangea-like TiO_(2) Ultrafine Cu clusters Hydrogen evolution Charge separation and transfer 

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