Journal
NANO LETTERS
Volume 14, Issue 2, Pages 1099-1105Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl500022z
Keywords
BiVO4; WO3; photoelectrochemical; water splitting; photoanode; core/shell nanowire
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Funding
- Center on Nanostructuring for Efficient Energy Conversion, an Energy Frontier Research Center
- U.S. Department of Energy, Office of Science, Office of Basic Energy sciences [DE-SC0001060]
- Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division, of the U.S. Department of Energy [DE-AC02-05CH11231]
- Link Foundation Energy Fellowship
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We report a scalably synthesized WO3/BiVO4 core/shell nanowire photoanode in which BiVO4 is the primary light-absorber and WO3 acts as an electron conductor. These core/shell nanowires achieve the highest product of light absorption and charge separation efficiencies among BiVO4-based photoanodes to date and, even without an added catalyst, produce a photocurrent of 3.1 mA/cm(2) under simulated sunlight and an incident photon-to-current conversion efficiency of similar to 60% at 300-450 nm, both at a potential of 1.23 V versus RHE.
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