Abstract
In order to develop a bactericidal agent operating under visible light irradiation, a silica gel-supported dihydroxo(tetraphenylporphyrinato)antimony(V) complex (SbTPP/SiO2) was prepared. The SbTPP/SiO2 particles irradiated by fluorescent light in a test tube induced remarkable bactericidal activity for Escherichia coli cells. The bactericidal activity of the SbTPP/SiO2 was affected by both the concentration of the SbTPP/SiO2 and the light intensity. Under irradiation by visible light, the SbTPP/SiO2 photocatalyst showed much superior bactericidal activity to the commercially available TiO2. Moreover, under irradiation by sunlight, bactericidal activity of the SbTPP/SiO2 was observed, and the bactericidal effect of the SbTPP/SiO2 particles was effective for continuous treatment on a column photoreactor under fluorescent-light irradiation.
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Yokoi, H., Shiragami, T., Hirose, J. et al. Bactericidal effect of a silica gel-supported porphyrinatoantimony(V) complex under visible light irradiation. World Journal of Microbiology and Biotechnology 19, 559–563 (2003). https://doi.org/10.1023/A:1025104032318
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DOI: https://doi.org/10.1023/A:1025104032318