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Abstract
Novel In2O3/BiVO4 heterojunction composite photocatalysts with tunable In2O3 content were prepared using a mild hydrothermal method. The structure, composition, and optical properties of the In2O3/BiVO4 composites were determined by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, UV–Vis diffuse reflectance spectroscopy, Brunauer–Emmett–Teller surface analysis, and X-ray photoelectron spectroscopy. Furthermore, photocatalytic activities of the as-prepared composites were investigated by studying the degradation of methylene blue (MB) solutions under simulated visible light irradiation (λ > 420 nm). It was found that the 50 % proportion of In2O3 in the In2O3/BiVO4 composite exhibited the highest photocatalytic performance, leading to 91 % decomposition of MB within 240 min of irradiation.
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