The Preparation of NiO/BiVO₄ Composite Photocatalyst and its Enhanced Photocatalytic Activities

Abstract:

The NiO/BiVO₄ composite photocatalysts were synthesized by hydrothermal method and were characterized by powder X-ray diffraction(XRD),scanning electron microscope (SEM), UV-vis diffuse reflectance spectrum(UV-vis DRS), Energy Dispersive Spectrometer (EDS), BET techniques. The photocatalytic activities were determined by oxidative decomposition of methyl orange in aqueous solution under visible light irradiation. The results showed that the light absorption of the NiO/BiVO₄ became higher in the visible range compared to pure BiVO₄, meantime, accompanied by a bathochromic shift of the absorption edge. The photocatalytic activities were evaluated by the photodegradation of Methyl Orange under visible light irradiation. The results showed that NiO loaded evidently improved the photocatalytic activity of BiVO₄, and loaded amount had a different impact on the catalytic activity of BiVO₄, The 20%NiO/BiVO₄ which exhibited the favorable photocatalytic activity in the photodegradation of Methyl Orange.

• Periodical: Applied Mechanics and Materials (Volumes 727-728)
• Pages: 42-46
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.727-728.42
• Online since: January 2015
• Authors: Pei Pei Yi, Xiang Zhai, Xiao Ming Gao, Feng Fu*
• Keywords: Methyl Orange, NiO/BiVO₄, Photocatalytic, Visible Light Irradiation

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