PHOTOCATALYTIC DEGRADATION OF METHYL ORANGE ON NANOMETER TiO2 COMPOSITE THIN FILMS

doi:10.7517/j.issn.1674-0475.2003.02.119

Abstract

Abstract: The evenly transparent nanometer TiO₂ composite thin films prepared by Sol-Gel processing were deposited on glass substrates,porous ceramics substrates and glass fiber substrates.The photocatalytic degradation of methyl orange in water was studied in cultural dish with UV lamp as light source.The effects of the initial concentration of methyl orange,carrier surface of catalyst,the light time and the pH value were also investigated.And the semiconductor coupling thin films were carried out for the photocatalytic degradation of methyl orange.The results showed that the SnO₂ TiO₂ composite thin films had higher photocatalytic degradation efficiency than that of the La doping TiO₂ thin films.

Key words: nanometer TiO₂ composite thin films, methyl orange, photocatalysis, semiconductor coupling

CLC Number:

LIU Fan-xin, CUI Zuo-lin, ZHANG Zhi-kun. PHOTOCATALYTIC DEGRADATION OF METHYL ORANGE ON NANOMETER TiO₂ COMPOSITE THIN FILMS[J]. Imaging Science and Photochemistry, 2003, 21(2): 119-125.

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PHOTOCATALYTIC DEGRADATION OF METHYL ORANGE ON NANOMETER TiO₂ COMPOSITE THIN FILMS

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