Lin Huaxiang, Xu Ziting, Wang Xuxu, Long Jinlin, Su Wenyue, Fu Xianzhi, Lin Qun
Research Institute of Photocatalysis, State Key Laboratory Breeding Base of Photocatalysis, Fuzhou University, Fuzhou 350002, People's Republic of China.
J Biomed Mater Res B Appl Biomater. 2008 Nov;87(2):425-31. doi: 10.1002/jbm.b.31120.
The TiO(2) film was coated on poly vinyl chloride (PVC) surface by dip-coating process from TiO(2)-PVC-THF suspension. The morphology and crystal structure of the as-synthesized samples were characterized by SEM and XRD. The photocatalytic properties were measured by the photodegradation reaction of RhB and the anti-adhesion and anti-bacteria for Escherichia coli. The results show that the resultant TiO(2) film is well-conglutinated on PVC surface and has the same crystal structure as the original TiO(2) powder. The TiO(2)/PVC shows excellent photocatalytic activity for the degradation of aqueous RhB and the activity increases with increasing reaction time and tends toward stable after accumulative illumination for 11.5 h. The TiO(2) film shows good bacterial anti-adhesion activity following photo-activation and sterilization property under UV irradiation. The E. coli can be killed completely after UV irradiation for 1.5 h.
通过将TiO(2)-PVC-四氢呋喃（THF）悬浮液进行浸涂工艺，将TiO(2)薄膜涂覆在聚氯乙烯（PVC）表面。通过扫描电子显微镜（SEM）和X射线衍射（XRD）对合成样品的形态和晶体结构进行表征。通过罗丹明B（RhB）的光降解反应以及对大肠杆菌的抗粘附和抗菌性能来测量光催化性能。结果表明，所得的TiO(2)薄膜在PVC表面良好地粘附，并且具有与原始TiO(2)粉末相同的晶体结构。TiO(2)/PVC对水溶液中的RhB降解表现出优异的光催化活性，且活性随反应时间增加而提高，在累积光照11.5小时后趋于稳定。TiO(2)薄膜在光活化后表现出良好的细菌抗粘附活性以及在紫外线照射下的杀菌性能。在紫外线照射1.5小时后，大肠杆菌可被完全杀死。
