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Ultra-fine Cu clusters decorated hydrangea-like titanium dioxide for photocatalytic hydrogen production
Feng, Ya-Jie1,2,3; Wang, Yang1,2; Wang, Kai-Wen4; Ma, Jiang-Ping1,2; Duan, You-Yu1,2; Liu, Jie5; Lu, Xu1,2; Zhang, Bin5; Wang, Guo-Yu3; Zhou, Xiao-Yuan1,2
2021-09-08
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 co-catalysts are widely used to improve the photocatalytic performance via surface electronic structure/properties optimization of the catalyst. Herein, we report ultra-fine (similar to 1 nm) Cu clusters decorated hydrangea-like TiO2 systems for photocatalytic hydrogen evolution. The pristine hydrangea-like TiO2 support shows a promising performance of hydrogen evolution (1.8 mmol.h(-1).g(-1)), which is similar to 10.7 times higher than that of the commercial P25 (168 mu mol.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-TiO2 (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 H2O to H-2. 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 TiO2 Ultra-fine Cu clusters Hydrogen evolution Charge separation and transfer
DOI10.1007/s12598-021-01815-z
发表期刊RARE METALS
ISSN1001-0521
页码11
通讯作者Zhang, Bin(welon5337@126.com) ; Zhou, Xiao-Yuan(xiaoyuan2013@cqu.edu.cn)
收录类别SCI
WOS记录号WOS:000693923500001
语种英语