期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 231, 期 -, 页码 101-107出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2018.03.014
关键词
CdS; Dual-cocatalyst; Hydrogen production; Photocatalysis
资金
- Natural Science Foundation of China [21576056, 21576057, 51608134]
- Natural Science Foundations of Guangdong Province [2017A030311016]
- Science and Technology Research Project of Guangdong Province [2016A010103043]
- Featured Innovation Project of Guangdong University [2016KTSCX107]
- Science and Technology Research Project of Guangzhou [201607010232, 201607010198]
- Guangzhou University's Training Program for Young Top-Notch Personnel [BJ201704]
The design and synthesis of robust and efficient photocatalysts for water splitting to generate hydrogen is deemed to be a promising approach for sustainable energy sources. In this work, noble-metal-free nanostructured ternary NIS/CDs/CdS (NCCS) photocatalysts were elaborately designed and successfully synthesized for high-efficient hydrogen evolution. Taking the advantages of strong absorption and electron buffer property of carbon dots (CDs), as well as merits of internal p-n junction formed between NiS and CdS, the as-prepared NCCS composite shows prominent promotion of hydrogen evolution in comparison with single CdS photocatalyst and binary hybrids (NIS/CdS and CDs/CdS). Remarkably, the optimal ternary hybrid achieves a hydrogen production rate as high as 1444.5 mu mol h(-1) g(-1) under visible light irradiation (lambda > 420 nm), up to 5.38 times over bare CdS spheres. This work paves a new pathway for the rational design of efficient hybrid photocatalysts toward solar energy conversion to chemical fuels.
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