期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 122, 期 22, 页码 11608-11615出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcc.8b00738
关键词
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资金
- King Saud University [RG-1438-001]
- University Jaume I [P11B2014-51]
- SOLENPE [UJI-B2016-05]
- Generalitat Valenciana through the Santiago Grisolia Program [2015-031]
Photoelectrochemical water splitting using semiconductor materials has emerged as a promising approach to produce hydrogen (H-2) from renewable resources such as sunlight and water. In the present study, Ag3PO4 nanoparticles were electrodeposited on BiVO4 photoanodes for water splitting. A remarkable water oxidation photocurrent of 2.3 mA.cm(-2) at 1.23 V versus reversible hydrogen electrode with similar to 100% Faradaic efficiency was obtained, which constitutes a notable increase compared to the pristine BiVO4 photoanode. It is demonstrated that the enhancement of optical absorption (above-band gap absorbance) and the decrease of surface losses after the optimized deposition of Ag/Ag3PO4 nanoparticles are responsible for this notable performance. Remarkably, this heterostructure shows promising stability, demonstrating 25% decrease of photocurrent after 24 h continuous operation. This approach may open new avenues for technologically exploitable water oxidation photoanodes based on metal oxides.
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