ZnO/TiO_2复合粒子的抗菌性能研究  

Antibacterial activity of ZnO/TiO_2 composite particle

作　　者：胡亚微[1] 贺惠蓉[1] 张弘弛[1] 马养民[1] 顾鑫 

机构地区：[1]陕西科技大学教育部轻化工助剂化学与技术重点实验室,陕西西安710021 [2]太仓中化环保化工有限公司,江苏太仓215433

出　　处：《陕西科技大学学报（自然科学版）》2013年第4期59-62,共4页Journal of Shaanxi University of Science & Technology

基　　金：国家自然科学基金项目(21201115);教育部高等学校博士点学科专项科研基金新教师类资助课题(20116125120004)

摘　　要：采用溶胶凝胶法制备了ZnO/TiO2复合粒子,通过XRD、SEM对所制备粉体颗粒的物相组成以及表面形貌进行表征,通过K-B纸片扩散法研究了紫外光照后ZnO/TiO2复合粒子的抗菌性能.结果表明,所制备的ZnO/TiO2复合粒子对革兰氏阴性菌大肠杆菌(Esche-richia coli)和绿脓杆菌(Pseudomonas aeruginosa)均具有良好的抑菌效果.并对ZnO/TiO2复合粒子的抑菌机理做了初步探讨,ZnO/TiO2复合粒子在紫外光照射下产生活性自由基(主要为.OH),具有强氧化性,产生优良的抗菌性能.ZnO/TiO2 composite particles were fabricated through sol-gel method. The phase, crystallographic structure and surface topography of the ZnO/TiO2 composite particles were charactered by XRD and SEM. The antibacterial activities of the ZnO/TiO2 composite particles after ultraviolet irradiation were performed by the K-B disk diffusion method. The resuits show that the ZnO/TiO2 composite particles display great antibacterial activity against Escherichia coli and Pseudornonas aeruginosa. The mechanism of antibacterial activity of ZnO/TiO2 composite particles is discussed. The active oxidative species （mainly ·OH）, which were produced on the surfaces of ZnO/TiO2 composite particles after ultraviolet irradiation, lead to the great antibacterial activity.

关 键 词：溶胶凝胶法 ZnO复合粒子 抗菌活性 

分 类 号：O611.3[理学—无机化学]