TY - JOUR
T1 - Photocatalytic sterilization of TiO2 films coated on Al fiber
AU - Luo, Li
AU - Miao, Lei
AU - Tanemura, Sakae
AU - Tanemura, Masaki
N1 - Funding Information:
Financial support from the NITECH 21st Century COE program for “World Ceramic Center for Environmental Harmony” is gratefully acknowledged.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2008/2/25
Y1 - 2008/2/25
N2 - Photocatalytic TiO2 films were coated on Al fiber by sol-gel dip-coating method, and then annealed. The crystal structure and morphology of the films were performed by XRD, TEM and SEM. Photocatalytic sterilization of the films was investigated in O2 atmosphere through purifying the aqueous solution with facultative aerobe (Bacillus cereus), aerobe (Pseudomonas aeruginosa) and anaerobe (Staphylococcus aureus, Enterococcus faecalis and Escherichia coli). In the presence of O2, it benefits to generate O2{radical dot}- and {radical dot}OH at the first stage of the photocatalytic reaction, while the excess O2 restrains the anaerobe from reproducing and accelerates the reproducing for the aerobe at the second stage of reaction. As a result, it was found that the crystal of TiO2 films is anatase phase and the films have excellent sterilization effect against facultative aerobe and anaerobe. Nevertheless, it only decreased the bioactivity against aerobe in a short time.
AB - Photocatalytic TiO2 films were coated on Al fiber by sol-gel dip-coating method, and then annealed. The crystal structure and morphology of the films were performed by XRD, TEM and SEM. Photocatalytic sterilization of the films was investigated in O2 atmosphere through purifying the aqueous solution with facultative aerobe (Bacillus cereus), aerobe (Pseudomonas aeruginosa) and anaerobe (Staphylococcus aureus, Enterococcus faecalis and Escherichia coli). In the presence of O2, it benefits to generate O2{radical dot}- and {radical dot}OH at the first stage of the photocatalytic reaction, while the excess O2 restrains the anaerobe from reproducing and accelerates the reproducing for the aerobe at the second stage of reaction. As a result, it was found that the crystal of TiO2 films is anatase phase and the films have excellent sterilization effect against facultative aerobe and anaerobe. Nevertheless, it only decreased the bioactivity against aerobe in a short time.
KW - Al fiber
KW - O
KW - Photocatalytic sterilization
KW - TiO film
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U2 - 10.1016/j.mseb.2007.09.012
DO - 10.1016/j.mseb.2007.09.012
M3 - Article
AN - SCOPUS:38949195980
VL - 148
SP - 183
EP - 186
JO - Materials Science and Engineering B: Solid-State Materials for Advanced Technology
JF - Materials Science and Engineering B: Solid-State Materials for Advanced Technology
SN - 0921-5107
IS - 1-3
ER -