Photocatalytic degradation of methyl thionine chloride in aqueous solution over nanometer (CdS/TiO₂)/MCM-41

Abstract

(CdS/TiO₂)/MCM-41 loaded nanometer photocatalyst was prepared by the sol-gel method and dipping process, the photocatalytic degradation of methyl thionine chloride in water was investigated by using the photocatalyst. The experimental results show that the optimum concentration of CdS over TiO₂ was 3% (molar ratio), the photocatalytic activity was enhanced when making TiO₂ the anatase phase with a rise of the roasting temperature, and the carrier, mesoporous molecular sieve MCM-41, was beneficial to improving the photocatalytic activity of TiO₂ for photocatalytic degradation of methyl thionine chloride. The morphology and the crystalline phase of the photocatalyst were discussed by means of XRD and SEM techniques, and the reaction mechanism of catalytic properties was also discussed.

Keywords

photocatalytic oxidation / (CdS/TiO₂)/MCM-41 / methyl thionine chloride degradation

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