Photocatalytic sterilization of TiO2 films coated on Al fiber

Li Luo; Lei Miao; Sakae Tanemura; Masaki Tanemura

doi:10.1016/j.mseb.2007.09.012

Photocatalytic sterilization of TiO₂ films coated on Al fiber

Li Luo, Lei Miao, Sakae Tanemura, Masaki Tanemura

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	183-186
Number of pages	4
Journal	Materials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume	148
Issue number	1-3
DOIs	https://doi.org/10.1016/j.mseb.2007.09.012
Publication status	Published - 2008 Feb 25
Externally published	Yes

Keywords

Al fiber
O
Photocatalytic sterilization
TiO film

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1016/j.mseb.2007.09.012

Cite this

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title = "Photocatalytic sterilization of TiO2 films coated on Al fiber",

abstract = "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.",

keywords = "Al fiber, O, Photocatalytic sterilization, TiO film",

author = "Li Luo and Lei Miao and Sakae Tanemura and Masaki Tanemura",

note = "Funding Information: Financial support from the NITECH 21st Century COE program for “World Ceramic Center for Environmental Harmony” is gratefully acknowledged. ",

year = "2008",

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doi = "10.1016/j.mseb.2007.09.012",

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volume = "148",

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journal = "Materials Science and Engineering B: Solid-State Materials for Advanced Technology",

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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.

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.

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