Effect of ZnFe2O4 Dopant on Structural Phase Transformation and Photocatalytic Activity of TiO2 Nanopowders

Abstract

Abstract: ZnFe₂O₄ and TiO₂ nanopowders were prepared by coprecipitation and sol-gel methods, respectively. Influence of ZnFe₂O₄ dopant on the anatase-to-rutile phase transformation of TiO₂ was investigated, and the photocatalytic activity of ZnFe₂O₄ doped TiO₂ nanopowders was evaluated by phenol degradation under sunlight irradiation. It was found that the phase transformation could be strongly promoted by doping ZnFe₂O₄ component in TiO₂ nanopowders, and an increase in the activity by a factor of 2₃ relative to pure TiO₂ nanomaterials was obtained under the optimum conditions.

Key words: Photocatalysis, Titania nanopowders, ZnFe₂O₄ dopant, Structural phase transformation, Phenol degradation

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YUAN Zhi-Hao, SUN Yong-Chang, WANG Yu-Hong, BIE Li-Jian, DUAN Yue-Qin, ZHANG Li-De . Effect of ZnFe₂O₄ Dopant on Structural Phase Transformation and Photocatalytic Activity of TiO₂ Nanopowders[J]. Chem. J. Chinese Universities, 2004, 25(10): 1875.

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Effect of ZnFe₂O₄ Dopant on Structural Phase Transformation and Photocatalytic Activity of TiO₂ Nanopowders

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