期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 5, 期 6, 页码 5449-5456出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.7b00787
关键词
Visible-light-driven photocatalysis; Molybdenum carbide; Charge separation; H-2; Water splitting
资金
- National Natural Science Foundation of China [21503062, U1662138, 21605102]
- State Key Laboratory Breeding Base of Coal Science and Technology
- Ministry of Science and Technology, Taiyuan University of Technology, China
- Thousand Talents Program for Young Researchers of China
Developing efficient noble-metal-free catalysts for photo catalysis under the irradiation of visible light, which is the main part of sunlight (44%), would represent a significant step toward making photocatalysis a more competitive strategy for solar energy utilization. Herein, nanospheres (similar to 200 nm) containing dimolybdenum carbide and carbon (Mo2C@C) were used to support CdS nanoparticles (similar to 5 nm) to form a noble-metal-free CdS/Mo2C@C photocatalyst. CdS/Mo2C@C shows an enhanced visible-light-driven photocatalytic H-2 evolution from water, with a H2 evolution rate of 554.3 mu mol h(-1), which is about 2 times higher than that on the widely used noble-metal-based CdS/Pt photo catalyst. Improved absorption of the visible light and separation of the photogenerated electron hole pairs could be the origins for the enhanced photocatalytic activity of CdS/Mo2C@C. The findings of this work will open a new door for fabricating efficient noble-metal-free photocatalysts for visible-light-driven photocatalysis.
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