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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50245

Title: SURFACE MODIFICATION OF ATO PHOTOCATALYST ON ITS BACTERICIDAL EFFECT AGAINST ESCHERICHIA COLI
Authors: Hshiang-Ho Chiang
Shing-Hoa Wang
Hsin-Yiu Chou
Chih-Ching Huang
Tsung-Lun Tsai
Yi-Che Yang
Jyh-Wei Lee
Tai-Yuan Lin
Yeun-Jung Wu
Chien-Chon Chen
Contributors: 國立臺灣海洋大學:機械與機電工程學系
Keywords: photocatalysis
ATO
nanoparticle
bactericidal effect
Date: 2014-07
Issue Date: 2018-09-27T02:10:58Z
Publisher: Journal of Marine Science and Technology
Abstract: Abstract: The increases in catalytic photolysis efficiency of the surface
modified ATO (anodic titanium oxide) by Ag or/and Au
nanoparticles were attributed to the greater light absorbance
than that of the sole ATO. In addition to the enhanced inherent
ATO absorbance at 365 nm inasmuch as the surface-plasmon
enhancement of the band emission, additional light absorbance
peak occurred at the wavelength around 430 nm, 530 nm
and 500 nm for nano Ag modified TiO2, nano Au modified
TiO2, and composite nano Ag/Au modified TiO2, respectively.
All surface modified ATO catalysts exhibited stronger bactericidal
effect under UV exposure than under visible light exposure
for 24 hrs. Even for a short time of one hour, survival
of E. coli decreased drastically from 106 CFU under the dark
control to 102 CFU under the UV exposure, which was about
four powers of exponent reduction. Surfaces modified ATO
catalysts need to take longer time exposure under visible light
irradiation than under UV irradiation to achieve the similar
photocatalytic efficiency
Relation: 22(2) pp.269-276
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50245
Appears in Collections:[機械與機電工程學系] 期刊論文

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