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Received: 2005-11-29
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Studies on characteristics of nanostructure of N-TiO2 thin films and photo-bactericidal action
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XU Ming-fang, LIN Shan, CHEN Xin-man, PENG Yan-zhi. Studies on characteristics of nanostructure of N-TiO2 thin films and photo-bactericidal action[J]. Journal of Zhejiang University Science B, 2006, 7(7): 586-590.
@article{title="Studies on characteristics of nanostructure of N-TiO2 thin films and photo-bactericidal action",
author="XU Ming-fang, LIN Shan, CHEN Xin-man, PENG Yan-zhi",
journal="Journal of Zhejiang University Science B",
volume="7",
number="7",
pages="586-590",
year="2006",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2006.B0586"
}
%0 Journal Article
%T Studies on characteristics of nanostructure of N-TiO2 thin films and photo-bactericidal action
%A XU Ming-fang
%A LIN Shan
%A CHEN Xin-man
%A PENG Yan-zhi
%J Journal of Zhejiang University SCIENCE B
%V 7
%N 7
%P 586-590
%@ 1673-1581
%D 2006
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2006.B0586
TY - JOUR
T1 - Studies on characteristics of nanostructure of N-TiO2 thin films and photo-bactericidal action
A1 - XU Ming-fang
A1 - LIN Shan
A1 - CHEN Xin-man
A1 - PENG Yan-zhi
J0 - Journal of Zhejiang University Science B
VL - 7
IS - 7
SP - 586
EP - 590
%@ 1673-1581
Y1 - 2006
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2006.B0586
Abstract: Pseudomonas aeruginosa strain (AS1.50) and Bacillus subtilis strain (AS1.439) from Ming lake were decomposed by photocatalytic nanostructure n-TiO2 thin films in a photo-reactor under UV irradiation. The different thickness nanostructure n-TiO2 thin films coated on mesh grid were prepared by sol-gel method and immobilized at 500 °C (films A) or 350 °C (films B) for 1 h in a muffle furnace. The results showed that n-TiO2 thin film B (8.18 nm thickness, 2.760 nm height and 25.15 nm diameter) has more uniform granular nanostructure and thinner flat texture than n-TiO2 thin film A (12.17 nm thickness, 3.578 nm height and 27.50 nm diameter). The bactericidal action of n-TiO2 thin film A and film B for Pseudomonas aeruginosa strain (AS1.50) and Bacillus subtilis varniger strain (AS1.439) were investigated in this work. More than 95% of photocatalytic bactericidal efficiency for Pseudomonas aeruginosa strain (AS1.50) and 75% for Bacillus subtilis strain (AS1.439) were achieved by using n-TiO2 thin films-B for 70~80 min of irradiation during the photo-bactericidal experimental process. The results indicated that the photo-induced bactericidal efficiency of n-TiO2 thin films probably depended on the characteristics of the films.
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