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• W4313648695 abstract "BiVO4 as a promising semiconductor candidate of the photoanode for solar driven water oxidation always suffers from poor charge carrier transport property and photo-induced self-corrosion. Herein, by intentionally taking advantage of the photo-induced self-corrosion process, a controllable photochemical etching method is developed to rationally construct a photoanode of BiVO4 /BiOx asymmetric heterojunction from faceted BiVO4 crystal arrays. Compared with the BiVO4 photoanode, the resulting BiVO4 /BiOx photoanode gains over three times enhancement in short-circuit photocurrent density (≈3.2 mA cm-2 ) and ≈75 mV negative shift of photocurrent onset potential. This is due to the formation of the strong interacted homologous heterojunction, which promotes photo-carrier separation and enlarges photovoltage across the interface. Remarkably, the photocurrent density can remain at ≈2.0 mA cm-2 even after 12 h consecutive operation, while only ≈0.1 mA cm-2 is left for the control photoanode of BiVO4 . Moreover, the Faraday efficiency for water splitting is determined to be nearly 100% for the BiVO4 /BiOx photoanode. The controllable photochemical etching process may shed light on the construction of homologous heterojunction on other photoelectrode materials that have similar properties to BiVO4 ." @default.
• W4313648695 created "2023-01-07" @default.
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• W4313648695 date "2023-01-05" @default.
• W4313648695 modified "2023-10-14" @default.
• W4313648695 title "Photochemically Etching BiVO₄ to Construct Asymmetric Heterojunction of BiVO₄/BiO_x Showing Efficient Photoelectrochemical Water Splitting" @default.
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• W4313648695 doi "https://doi.org/10.1002/smtd.202201611" @default.
• W4313648695 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36605012" @default.
• W4313648695 hasPublicationYear "2023" @default.
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