Surface Morphology, Spectra and Photocatalytic Bactericidal Effect of Chlorophyll-Sensitizing TiO2 Crystalline Phases

Abstract

Abstract: Different crystalline TiO₂ films prepared by the sol-gel method were modified by employing chlorophyll as the sensitizer, and characterized by XRD, AFM, UV-vis absorption spectra and Fluorescence emission spectra. The activity of killing the pathogenic bacteria of cabbage soft rot on chlorophyll-sensitized TiO₂ film was investigated. The results show that three TiO₂ nanocrystalline particles of anatase, mixed-crystalline and rutile sensitized by natural chlorophyll can effectively kill pathogenic cabbage-soft-rot bacteria under visible light.

Key words: TiO₂, chlorophyll, sensitization, photocatalyse, bactericid

CLC Number:

O643

LI Min,WANG Zhen-Ling,SHI Heng-Zhen,ZENG Yi. Surface Morphology, Spectra and Photocatalytic Bactericidal Effect of Chlorophyll-Sensitizing TiO₂ Crystalline Phases[J]. Journal of Inorganic Materials.

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Surface Morphology, Spectra and Photocatalytic Bactericidal Effect of Chlorophyll-Sensitizing TiO₂ Crystalline Phases

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