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- W2887139913 abstract "Here, we establish a methodology and phenomena for systematically assessing the photoelectrochemical transformation of the BiVO4 to Bi2S3/BiVO4 hybrid heterostructure during in-situ solar hydrogen generation. The photoelectrochemical transformation involves a facile anion exchange process by reacting BiVO4 photoelectrodes with Na2S/Na2SO3 electrolyte. X-ray photoelectron spectroscopy and transmission electron microscopy analyses confirmed the successful transformation of BiVO4 into the Bi2S3/BiVO4 nanostructure matrix. The photocurrent density of the ABV3 photoelectrode is optimized to be 3.3 mA cm–2 with hydrogen generation activity (∼417 μmol cm–2 h–1) under simulated sunlight at 0.67 V versus reversible hydrogen electrode (RHE). The impacts of other factors such as crystal structure, enhancing light harvesting, and increasing electron–hole separation on the photoelectrochemical performance and stability of Bi2S3/BiVO4 hybrid photoanodes are highlighted. A model based on the photoelectrochemical transformation is also proposed to explain the growth and charge transport phenomenon in Bi2S3/BiVO4 hybrid nanostructured photoanodes. These findings are expected to shed light on further understanding and design of a novel strategy of engineering electronic band structure through photoelectrochemical transformation, which plays a key role in the enhanced performance of hybrid nanostructures in the fields of energy conversion." @default.
- W2887139913 created "2018-08-22" @default.
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- W2887139913 date "2018-08-03" @default.
- W2887139913 modified "2023-10-15" @default.
- W2887139913 title "<i>In-Situ</i> Noble Fabrication of Bi<sub>2</sub>S<sub>3</sub>/BiVO<sub>4</sub> Hybrid Nanostructure through a Photoelectrochemical Transformation Process for Solar Hydrogen Production" @default.
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- W2887139913 doi "https://doi.org/10.1021/acssuschemeng.8b03140" @default.
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