Antibacterial Properties of TiO_2 Ceramic Pellets Prepared Using Nano TiO_2 Powder

作     者：姚亚东 殷光富 YAO Yadong1, LI Yongdi1, SHAO Wei1, KANG Yunqing1, WANG Hongjing2, HUANG Zhongbin1, LIAO Xiaoming1, YIN Guangfu1* (1.College of Materials Science and Engineering, Sichuan University, Chengdu 610064, China;2. Second Affiliated Hospital of Sichuan University, Chengdu 610041, China)

作者机构：College of Materials Science and Engineering Sichuan University 

出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报（材料科学英文版）)

年 卷 期：2009年第24卷第3期

页      面：337-342页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学] 

基　　金：Funded by the Applied Basis Research from Sichuan Province  the Research of Photo Purification to Environment with Nano TiO2 (No. 05YJ029-010) 

主　　题：TiO2 ceramic pellet photocatalysis antibacterial properties 

摘      要：Titanium dioxide （TiO2） porous ceramic pellets with three dimension nano-structure were prepared using nano TiO2 powder. The TiO2 porous ceramic pellets were composed of TiO2 nanoparticles with 14-16 nm in diameter and had porosity of 74.85%. The mean pore size of the TiO2 porous ceramic pellets was 20.73 nm and the main pore size ranged from 3 to 16 nm. The mass loss of the TiO2 ceramic pellets was less than 5% after 20 d immersion in water. The antibacterial properties of the TiO2 pellets were studied. The sterilization rate of Colibacillus （hospital polluted water with bacterium） can reach 99% after 3 h photocatalytic process and these TiO2 pellets are easy to be re-activated and cyclically be used. The shaping mechanism and photocatalysis sterilization mechanism of the TiO2 pellets were discussed.