Photocatalytic bactericidal effect of TiO2 film on fish pathogens

被引：21
作者：
Cheng, T. C.
Chang, C. Y.
Chang, C. I.
Hwang, C. J.
Hsu, H. C.
Wang, D. Y.
Yao, K. S.
机构：
[1] Department of Life Science, Mingdao University
[2] Aquaculture Division, Fisheries Research Institute, Council of Agriculture
[3] Institute of Materials and System Engineering, Mingdao University
来源：
SURFACE & COATINGS TECHNOLOGY | 2008年 / 203卷 / 5-7期
关键词：
Photocatalytic titanium dioxide (TiO2); Fish pathogen; UV;
D O I：
10.1016/j.surfcoat.2008.08.022
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this research, fish bacteria pathogens, Streptococcus iniae and Edwardsiella tarda, are deposited on TiO2 film and radiated with 500 mu W/cm(2) of ultraviolet A (UV-A, 360 nm). The bacteria viability is estimated using 2, 3, 5-triphenyl tetrazolium chloride (TTC) and inhibition efficiency calculated. The results show that bacteria inhibition efficiency in UV-A radiated TiO2 film groups is significantly higher than that of UV-A radiated only groups. Regardless of fish pathogen species, inhibition efficiency of higher than 96% is found in the TiO2 coated experimental groups that are exposed in 90 min of UV-A radiation. These results suggest that combined use of UV-A and TiO2 can enhance bactericidal effects on fish pathogens in fish farm. (C) 2008 Elsevier B.V. All rights reserved.
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收藏
页码：925 / 927
页数：3
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