Controlling Morphologies and Visible Light Photocatalytic Activity of Microstructured BiVO4 in a Microwave Hydrothermal Process

Yin Hu; Dan Zhen Li; Guang Can Xiao; Yu Shao

doi:10.4028/www.scientific.net/AMR.287-290.1744

Paper Titles

Study Defoaming Properties of Water-Based Varnish
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Synthesized WO₃/ZrO₂ Nanocomposite as the Catalyst for Preparation of Peracetic Acid
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Preparation of Nano-TiO₂ Using a Sol-Gel Process Mediated in Reverse Microemulsion Combined with a Solvent Thermal Technique
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The Preparation of C, N, S Tri-Doped TiO₂ and Visible-Light Photo-Degradation of Methylene Blue and Dyes
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Controlling Morphologies and Visible Light Photocatalytic Activity of Microstructured BiVO₄ in a Microwave Hydrothermal Process
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Catalytic Transfer Hydrogenolysis of 2-Phenyl-2-Propanol with Pd/C and Formic Acid
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Vapor-Phase Elemental Mercury Adsorption by Novel Modified Vermiculite Adsorbents Impregnated with Different Agents
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A Novel Catalyst for the Preparation of Biodegradable Polycarbonate from Carbon Dioxide
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Research on the Technical Conditions on Synthesizing Calcium Zirconate Material
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Controlling Morphologies and Visible Light Photocatalytic Activity of Microstructured BiVO₄ in a Microwave Hydrothermal Process

Abstract:

A CTAB-assisted microwave hydrothermal method was used to synthesize BiVO₄ photocatalysts with different shapes. The obtained products were characterized by powder X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), UV-vis diffuse reflectance spectroscopy (DRS). The results showed that the monoclinic phase BiVO₄ polyhedron was formed via a tetragonal zircon-type BiVO₄ precursor. UV-vis diffuse reflectance spectra showed a great shift to longer wavelengths in the visible region for the monoclinic phase BiVO₄ samples compared to the BiVO₄ precursor. The photocatalytic activity of the sample was investigated for the liquid phase photocatalytic degradation of RhB under visible light irradiation (λ>420nm). The effects of different reaction times on the photocatalytic activity of BiVO₄ had also been investigated, and the highest efficiency was observed when the sample was prepared at 140 °C for 30min.