Preparation of Nitrogen-Doped TiO₂ /Slide Glass Photocatalyst and Application for Determination of Chemical Oxygen Demand of Pesticide Phoxim in Circulating Photoreactor

Abstract:

Nitrogen-doped TiO2 (N-TiO2) film photo catalyst loaded on slide glass was prepared considering ammonia (NH3) as nitrogen sources by sol-gel method. X-ray diffraction and SEM were employed to characterize the morphology, structure of the N-TiO2 photocatalyst. The chemical oxygen demand (COD) with N-TiO2 film photocatalyst experiment by degrading pesticide phoxim in aqueous solution under UV light by a self-design circulating photoreactor indicated that the degradation efficiency of N-TiO2 film photo catalyst was depended on the layer numbers, flow velocity of solution and the category of light sources. The influence factors of preparation conditions were optimized. The optimum degradation efficiencies of COD decreased to 56.3 mg/L by using N-TiO2 film photo catalyst in 60 min reaction period. In addition, the N-TiO2 film photo catalyst has better photocatalytic activity under sunlight irradiation.

• Periodical: Advanced Materials Research (Volumes 393-395)
• Pages: 1367-1370
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.393-395.1367
• Online since: November 2011
• Authors: Jin Fen Niu, Bing Hua Yao, Zeng Fu Jin
• Keywords: Chemical Oxygen Demand (COD), N-Doped Film Photo Catalyst, Pesticide Phoxim, TiO₂

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