Journal
ACS APPLIED NANO MATERIALS
Volume 3, Issue 11, Pages 11517-11526Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.0c02616
Keywords
p-n heterojunction; diethylenetriamine; CdS; Cu2S snowflakes; interface; photocatalytic hydrogen production
Funding
- National Natural Science Foundation of China [51572103, 51973078]
- Distinguished Young Scholar of Anhui Province [1808085J14]
- Major Projects of the Education Department of Anhui Province [KJ2020ZD005]
- Key Foundation of Educational Commission of Anhui Province [KJ2019A0595]
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Constructing a cocatalyst-free semiconductor catalyst with high catalytic efficiency has great significance to photocatalytic hydrogen (H-2) production. Herein, by incorporating diethylenetriamine (DETA) into inorganic materials (CdS), an organic-inorganic hybrid, CdS-DETA (CD), and a snowflake-like Cu2S p-n heterojunction were designed by the hydrothermal synthesis method. The photocatalytic H2 generation rate of Cu2S/CD (CU/CD) can reach 9.00 mmol.g(-1).h(-1), which is 1.25, 5.03, and 6.12 times higher than that of H-2 produced by Pt/CD, CD, and CdS nanorods (CdS NRs), respectively. Under the action of the organic molecule DETA, the photocorrosion of CdS is effectively inhibited. The Cu2S snowflakes and the organici-norganic hybrid CD tight-contact interface and the p-n heterojunction improve the charge separation efficiency in the composite and enhance the photocatalytic activity. This work designed a type of photocatalyst heterojunction to provide an effective strategy for turning solar energy into a green and clean energy.
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