Synthesis of TiO₂/Al-MCM-41 Composites with Coal-Measure Kaolin and Performance in Its Photocatalysis

Qisheng Wu, Shuiping Li

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DOI: 10.4236/msa.2011.21003                

Abstract

TiO2/Al-MCM-41 composites with various titania content were prepared by loading titania into the mesopores of Al-MCM-41 mesoporous molecular sieve from coal-measure kaolin as silicon and aluminum source via general sol-gel method and incipient wetness impregnation method. TiO2/Al-MCM-41 composites were characterized by XRD, FT-IR and SEM, and the photocatalytic degradation of methyl orange solution under visible light irradiation. The results showed that the titania crystalline phase was anatase, and the particles size of TiO₂ increase with TiO₂ content. The photocatalytic degradation rates of all samples prepared by sol-gel method and incipient wetness impregnation have been become stable by visible light irradiation for 150 min, and the highest degradation rate was 83.7% and 76% respectively.

Keywords

Coal-Measure Kaolin, Al-MCM-41, TiO₂, Photocatalytic Degradation, Methyl Orange

Conflicts of Interest

The authors declare no conflicts of interest.

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