Antibacterial properties of TiO2 ceramic pellets prepared using nano TiO2 powder |
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| Authors: | Yadong Yao Yongdi Li Wei Shao Yunqing Kang Hongjing Wang Zhongbin Huang Xiaoming Liao Guangfu Yin |
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| Affiliation: | (1) College of Materials Science and Engineering, Sichuan University, Chengdu, 610064, China;(2) Second Affiliated Hospital of Sichuan University, Chengdu, 610041, China |
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| Abstract: | 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. Funded by the Applied Basis Research from Sichuan Province, the Research of Photo Purification to Environment with Nano TiO2 (No. 05YJ029-010) |
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| Keywords: | TiO2 ceramic pellet photocatalysis antibacterial properties |
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