纳米TiO_2膜杀菌陶瓷的制备与杀菌机理探讨  

Preparation for the nanocrystalline TiO_2 film on bactericidal ceramics and study on its sterilizing capabilities

作　　者：余历军[1] 朱玲菊[2] 朱晓东[1] 何家文[1] 

机构地区：[1]西安交通大学金属材料强度国家重点实验室,陕西西安710049 [2]西北大学化工学院,陕西西安710069

出　　处：《云南大学学报（自然科学版）》2005年第S1期86-88,92,共4页Journal of Yunnan University(Natural Sciences Edition)

基　　金：陕西省教育厅产业化培育项目资助(04JC26)

摘　　要：采用烷氧基钛热分解法在陶瓷表面制得均匀透明的多孔TiO2膜.用TEM,XRD,中国国家标准GB15979-2002等方法对膜及杀菌性能进行了研究.该膜为纳米晶粒,杀菌范围广、速度快、杀菌率高;对金黄色葡萄球菌、大肠杆菌、白色念珠菌在30min的杀菌率均达到92%以上.并对该膜光催化原理、膜表面活性氧类的形成机理、TiO2膜光催化杀菌机理进行了探讨.The nanocrystalline TiO2 film, which is even, transparent and porous, was prepared through titanium butyrate thermal decomposition methods on the surface of ceramics and glasses. The photocatalytic mechanism, reactive oxygen species forming mechanism, and TiO2 particle s bactericidal mechanism of this nanocrystalline film were investigated. The bactericidal capability of the film was examined with the methods of GB15979-2002. The results showed that the film has the wide sterilizing range, high sterilizing...

关 键 词：纳米TIO2膜 杀菌陶瓷 杀菌率 光催化作用 杀菌机理 

分 类 号：TB383[一般工业技术—材料科学与工程]