Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 116, Issue 4, Pages 3200-3205Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp211409x
Keywords
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Funding
- University of Michigan
- Department of Chemistry
- NSF [DMR-0320710, DMR-0420785]
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Electrodeposited thin films composed of CuWO4-WO3 oxidize water under AM 1.5G irradiation with no electrical bias and simultaneous reduction of [Fe(CN)(6)](3-) at a Pt-mesh auxiliary electrode with a faradaic efficiency of >85%. The quantum efficiency and apparent quantum yield are 7% (at 400 nm) and 0.038%, respectively, in a representative film. Although low, the photoanode is stable, maintaining its steady-state current density (17 mu A/cm(2)) over a 2.5 h illumination period. Through full photoelectrochemical characterization, we identify the specific drawbacks in our material and propose solutions.
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