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- W2032912226 abstract "We prepared BiVO 4 -graphene nanocomposites by using a facile single-step method and characterized the material by x-ray diffraction, scanning electron microscopy, Fourier-transform infrared spectroscopy, ultraviolet-visible diffuse-reflection spectroscopy, and three-dimensional fluorescence spectroscopy. The results show that graphene oxide in the catalyst was thoroughly reduced. The BiVO 4 is densely dispersed on the graphene sheets, which facilitates the transport of electrons photogenerated in BiVO 4 , thereby leading to an efficient separation of photogenerated carriers in the coupled graphene-nanocomposite system. For degradation of rhodamine B dye under visible-light irradiation, the photocatalytic activity of the synthesized nanocomposites was over ∼20% faster than for pure BiVO 4 catalyst. To study the contribution of electrons and holes in the degradation reaction, silver nitrate and potassium sodium tartrate were added to the BiVO 4 -graphene photocatalytic reaction system as electron-trapping agent and hole-trapping agent, respectively. The results show that holes play the main role in the degradation of rhodamine B." @default.
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- W2032912226 date "2014-01-01" @default.
- W2032912226 modified "2023-10-17" @default.
- W2032912226 title "Preparation of BiVO<sub>4</sub>-Graphene Nanocomposites and Their Photocatalytic Activity" @default.
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- W2032912226 doi "https://doi.org/10.1155/2014/401697" @default.
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