Synthesis of nanometer Bi2WO6 synthesized by sol-gel method and its visible-light photocatalytic activity for degradation of 4BS |
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| Authors: | Gaoke Zhang Fan Lü Junling Yang Baibiao Huang |
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| Institution: | a School of Resources and Environmental Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, PR China
b State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, PR China |
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| Abstract: | Nanometer Bi2WO6 catalyst with visible-light responsive was prepared by a sol-gel method in the presence of EDTA. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-vis diffuse reflectance spectrum, Fourier transform infrared (FTIR) spectrum, Brunauer-Emmet-Teller (BET). The UV-vis diffuse reflectance spectrum of the as-prepared sample shows a markedly blue-shift as compared to that of the sample obtained by a solid-state reaction. The as-prepared samples exhibited higher activities than that synthesized by the solid-state reaction for 4BS photodegradation under visible-light irradiation (λ>400 nm) and the sample prepared at 450 °C exhibited the highest photocatalytic activity. |
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| Keywords: | A Inorganic compounds A Semiconductors A Nanostructures B Sol-gel growth D Microstructure |
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