将长余辉发光材料与TiO2薄膜相复合制备了蓄能光催化材料,研究了此材料对大肠杆菌的抗菌性能.TiO2在光照下具有高的光催化活性,能够将细菌完全分解,而在黑暗中却没有光催化性能.蓄能发光材料能够为TiO2提供光源,这样即使在关闭光源的黑暗中,蓄能光催化材料也具有抗菌作用.这种蓄能光催化材料可以采扇间歇照明的方式实现全天候抗菌功能.
Light-storing photocatalyst was prepared by combining long afterglow phosphor with TiC-2 photocatalyst film, and bactericidal effect of this material on E.coli was investigated. TiO2 shows high bactericidal ability under irradiation of light source and can decompose bacterial cell completely, but can not function in the darkness. The long afterglow phosphor can supply light for TiO2 film after irradiation source is cut off, and hence E.coli can be killed by the light-storing photocatalyst even in the dark. This light-storing photocatalyst can be irradiated intermittently while maintaining photocatalyst activity all the time.
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