Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 201, Issue -, Pages 77-83Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2016.08.027
Keywords
BiVO4 nanowires; CdS; Z-scheme; Photocatalytic H-2 generation; Visible light
Funding
- National Science Foundation of China (NSFC) [21271010, 21671133]
- Shanghai Municipal Education Commission [15ZZ088, 15SG49, 14JC1402500]
- Science and Technology Commission of Shanghai Municipality [14DZ2261000]
- Shanghai Science and Technology Commission [14DZ2261100]
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Highly efficient photocatalysts require to be achieved via an efficient charge separation action and responded under visible light. Here, we demonstrate a novel Z-scheme heterojunction photocatalyst composed of two visible light responding semiconductors without use of electron mediator. The as-prepared CdS nanoparticles decorated BiVO4 nanowires (CdS/BiVO4 NWs) exhibit broader light absorption region and Z-scheme charge separation mechanism for photocatalytic H-2 generation under visible light. As a results, the optimizing CdS/BiVO4 NWs in 1:2 wt ratio shows more than two times increase in photocatalytic H-2 generation rate compared to bare CdS. Moreover,, the Z-scheme CdS/BiVO4 NWs lead to main oxidation sites at BiVO4 NWs that successfully, avoid photo-corrosion of. CdS during photocatalysis. (C) 2016 Published by Elsevier B.V.
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