Study on the Influencing Factors of V-Doped TiO2 Photocatalysis

Shu Qin Wang; Wen Bo Liu; Ding Lin Zhang

doi:10.4028/www.scientific.net/AMR.955-959.2521

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Analysis of Density of PM2.5 under Diffusion and Attenuation Based on Non-Stationary Two-Dimensional Multi-Box Model
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Removal Effect of Ditch Pond Wetlands on Non-Point Source Pollutants from Agricultural Drainage
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Emergency Response Technology Using Powdered Activated Carbon for Sudden Water Pollution Accidents with Petroleum Pollutants
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Study on the Influencing Factors of V-Doped TiO₂ Photocatalysis
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Integrated Processes of Anoxic/Oxic Bioreactor and Artificial Wetland for Rural Domestic Wastewater Treatment
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Research Progress and Enhancement of MDC Process
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Acetylation of Pomelo Peel for the Production of Oil Materials
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Effect of Paper Mill Sludge on Adsorption and Desorption of Cd(II) and Pb(II) in Paddy Soils
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Study on the Influencing Factors of V-Doped TiO₂ Photocatalysis

Abstract:

V-doped TiO₂ was prepared by the sol-gel method. The different reaction and preparation conditions of TiO₂ and V-doped TiO₂were evaluated through the formaldehyde degradation under the visible light. Results showed that the formaldehyde degradation efficiency reached 70.8% when the doping amount of V was 1%(mol), the calcining temperature was 700 oC and pH was 3.5; It improved to 88.5% with 20g activated carbon as support and the 89W energy-saving lamp as light source; The formaldehyde degradation products were H₂O and CO₂; The specific surface area and pore distribution of TiO₂ were analyzed by BET and its crystalline structure was analyzed by XRD,which indicated that mixture of anatase and rutile have large surface area and strong photocatalytic activity due to the V-doping. These suggested that the photocatalytic reactions of formaldehyde included adsorption and photocatalytic oxidation which was obvious for the V-doped TiO₂.