Rational design of 2D/2D ZnIn 2 S 4 /C 3 N 4 heterojunction photocatalysts for enhanced photocatalytic H 2 production

The development of close contact two-dimensional (2D) heterojunction photocatalysts for hydrogen evolution performance possesses great significance. In this work, we reported the design and photocatalytic activity of 2D ZnIn 2 S 4 nanosheet (NS)/2D C 3 N 4 NS heterojunction photocatalysts, which wer...

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Published in:New journal of chemistry 2023-04, Vol.47 (14), p.6583-6590
Main Authors: Guan, Peng, Han, Peigeng, Yang, Bin, Yin, Hang, Liu, Jianyong, Yang, Songqiu
Format: Article
Language:English
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Summary:The development of close contact two-dimensional (2D) heterojunction photocatalysts for hydrogen evolution performance possesses great significance. In this work, we reported the design and photocatalytic activity of 2D ZnIn 2 S 4 nanosheet (NS)/2D C 3 N 4 NS heterojunction photocatalysts, which were prepared using a hydrothermal method. The ZnIn 2 S 4 NSs were grown evenly on the surface of C 3 N 4 (180) nanosheets. The photocatalytic H 2 production performance of heterojunction photocatalysts was also tested under visible-light irradiation. In addition, the unique 2D/2D heterojunction architecture offered a larger contact area, stronger electronic interaction and longer lifetime of photogenerated carriers to enhance the separation and the transfer of charges. Therefore, the optimized 40ZnIn 2 S 4 /C 3 N 4 (180) possesses the best H 2 production performance (2016.94 μmol h −1 g −1 ), which is about 22.9- and 2.2-fold that of C 3 N 4 and ZnIn 2 S 4 , respectively. This work may provide promising potential for the construction of 2D/2D heterojunction photocatalysts with outstanding performance and high stability.
ISSN:1144-0546
1369-9261
DOI:10.1039/D2NJ06217H