Antibacterial properties of TiO2 ceramic pellets prepared using nano TiO2 powder

作者：Yao Yadong; Li Yongdi; Shao Wei; Kang Yunqing; Wang Hongjing; Huang Zhongbin; Liao Xiaoming; Yin Guangfu^*

来源：Journal of Wuhan University of Technology-Materials Science Edition, 2009, 24(3): 337-342.

DOI：10.1007/s11595-009-3337-0

• TiO2 ceramic pellet
• photocatalysis
• antibacterial properties

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.

• 出版日期2009-6
• 单位四川大学