TiO_2光催化薄膜在陶瓷器具上抗菌效果的研究  

Photocatalytic Antibacterial Effect to TiO_2 Thin Film on Ceramic Plate

作　　者：黄惠莉[1] 黄妙良[1] 蔡阿娜[1] 林煜[1] 林文銮[1] 

机构地区：[1]华侨大学材料科学与工程学院,泉州362011

出　　处：《应用化学》2002年第1期48-52,共5页Chinese Journal of Applied Chemistry

基　　金：福建省自然科学基金 ( D0 0 10 0 11);华侨大学科研基金 ( H9915 )资助项目

摘　　要：以普通釉面陶瓷作为基体 ,采用溶胶 -凝胶方法和浸渍提拉技术制备 Ti O2 和 Pt/ Ti O2 抗菌薄膜 .分别选用大肠杆菌和金黄色葡萄球菌作为试验菌 ,并分别在紫外线和太阳光的照射下 ,研究了不同薄膜的膜厚度和暴光时间与杀菌率之间的关系 .在紫外灯照射下 ,膜厚约 80和 5 5 nm的 Ti O2 薄膜及膜厚约 5 0 nm Pt/Ti O2 薄膜对大肠杆菌和金黄葡萄球菌均有杀菌效果 .对大肠杆菌的杀菌效果较好 ,经紫外线照射 30 min后 ,杀菌率可达 90 %以上 .显著优于太阳光的照射效果 .对金黄葡萄球菌的杀菌效果 ,膜厚约 5 5 nm的 Ti O2 薄膜的杀菌效果较好 .TiO 2 and Pt/TiO 2 antibacterial thin films were prepared by sol-gel process and dip-coating method on the substrate of ordinary glazed ceramic plate. The relationship between film thickness, exposure time and antibacterial effect of the thin films on Colibacillus and Staphylococcus aureus under the irradiation of ultraviolet and sunlight was studied. TiO 2 films of about 80 nm and 55 nm thicknesses and Pt/TiO 2 films of about 50 nm thicknesses showed antibacterial efficiencies of 90% or more on Colibacillus after 30 min ultraviolet irradiation. The experimental results has also shown that the ultraviolet irradiation effect is better than Sun does in the same concentration of the film. TiO 2 film of about 55 nm thicknesses presented the best efficiency on the Staphylococcus aureus.

关 键 词：TIO2 光催化 杀菌 抗菌薄膜 陶瓷器具 抗菌效果 光催化剂 光催化抗菌陶瓷 

分 类 号：TQ174.7[化学工程—陶瓷工业] O643.36[化学工程—硅酸盐工业]