Influence of TiO2 impregnated with a novel copper(II) carboxylic porphyrin and its application in photocatalytic degradation of 4-Nitrophenol

Research on Chemical Intermediates - Tập 40 - Trang 1911-1922 - 2013
Xiangfei Lü1,2, Nanjiang Hu3, Jun Li2, Hongrui Ma1, Kai Du1, Ran Zhao1
1Department of Environmental Engineering, College of Resource and Environment Science, Shaanxi University of Technology, Xi’an, People’s Republic of China
2Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi’an, People’s Republic of China
3Department of Process Equipment Controll and Engineering, College of Light Industry and Energy, Shaanxi University of Technology, Xi’an, People’s Republic of China

Tóm tắt

A novel 5,15-di-[4-carboxylatomethoxy]phenyl-10,20-diphenylporphyrin, its copper complex and the corresponding metalloporphyrin-TiO2 photocatalyst were synthesized and characterized by DRS, SEM, XRD, and FT–IR. The photocatalytic effects of anataseTiO2 impregnated with this copper(II) porphyrin was investigated by photodegradation of 4-nitrophenol(4-NP) in aqueous solution under Xenon lamp irradiation. The results indicated that the photoactivity of copper(II) porphyrin-TiO2 composite was evidently enhanced by the interaction between carboxyl of the porphyrin molecule and hydroxyls anchored on the TiO2. Futhermore, the copper(II) carboxylic porphyrin displayed good adsorption behavior and activity of the dye-sensized TiO2 system.

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