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Preparation and Photocatalytic Capacity Evaluation of TiO2/BiVO4 Nanocrystalline Heterojunctions

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TiO2/BiVO4 heterojunction nanostructures were successfully synthesized via a facile hydrothermal synthesis coupling with impregnation strategy to enhance the visible-light-driven photocatalytic properties of BiVO4 nanocrystals. The samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM) and UV-vis diffuse reflectance spectra (DRS), as well as evaluated via photocatalytic test. The experimental results reveal that these TiO2/BiVO4 heterojunction nanostructures exhibit higher visible-light photocatalytic activities than both the individual BiVO4 nanocrystals and TiO2 for the degradation of model dye methylene blue. The optimum composition of TiO2 was 70% (mass ratio). The enhanced photocatalytic efficiencies are attributed to the enhancement of the wide spectrum responsive. The nanostructures are expected to show considerable potential applications in solar-driven waste water treatment.
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Keywords: INORGANIC COMPOUNDS; NANOSTRUCTURES; OPTICAL MATERIALS

Document Type: Research Article

Publication date: August 1, 2016

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  • Science of Advanced Materials (SAM) is an interdisciplinary peer-reviewed journal consolidating research activities in all aspects of advanced materials in the fields of science, engineering and medicine into a single and unique reference source. SAM provides the means for materials scientists, chemists, physicists, biologists, engineers, ceramicists, metallurgists, theoreticians and technocrats to publish original research articles as reviews with author's photo and short biography, full research articles and communications of important new scientific and technological findings, encompassing the fundamental and applied research in all latest aspects of advanced materials.
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