期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 45, 期 43, 页码 22711-22721出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2020.06.093
关键词
Photocatalytic H-2 evolution; Zn0.5Cd0.5S; C3N5; Solid solution; Visible light
资金
- Natural Science Foundation of China [21571029, 21671035]
- Science and Technology Research Foundation of Jilin Provincial Development of Education [JJKH20170908KJ]
In this work, a novel direct Z-scheme g-C3N5/Zn0.5Cd0.5S (CN/ZCS) heterojunction was successfully synthesized. Furthermore, its photocatalytic activity for hydrogen production was also investigated, whose photoluminescence spectrum revealed the charge transfer procedure of g-C3N5 and ZCS. Moreover, the optimized hydrogen production rate of ZCS with 15 wt% of g-C3N5 (15% CN/ZCS) was about 142.8 mmol/h/g and quantum efficiency (Q.E.) was circa 33.7% under 420 nm monochromatic light. Compared with the pure ZCS and ZCS with 2 wt% of Pt, the 15% CN/ZCS composite exhibited considerable improved hydrogen production rate, which was about 20 times and 7 times, respectively. The formation of CN/ZCS composite resulted in faster separation of the photogenerated electron-hole pairs. Our work may supply valuable data for the application of g-C3N5 on photocatalysis. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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