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Antibacterial Activity of Hydrophobic Composite Materials Containing a Visible-Light-Sensitive Photocatalyst
Joint Authors
Yamauchi, Goro
Yao, Yanyan
Yamauchi, Kentaro
Sakai, Munetoshi
Kubota, Yoshinobu
Ochiai, Tsuyoshi
Source
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-11-28
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Engineering Sciences and Information Technology
Chemistry
Abstract EN
The conventional superhydrophobic surface offered by PTFE provides no sterilization performance and is not sufficiently repellent against organic liquids.
These limit PTFE's application in the field of disinfection and result a lack of durability.
N-doped TiO2 photocatalyst added PTFE composite material was developed to remedy these shortcomings.
This paper reports the surface characteristics, and the bactericidal and self-cleaning performance of the newly-developed composite material.
The material exhibited a contact angle exceeding 150 degrees consistent with its hydrophobicity despite the inclusion of the hydrophilic N-doped TiO2.
The surface free energy obtained for this composite was 5.8 mN/m.
Even when exposed to a weak fluorescent light intensity (100 lx) for 24 hours, the viable cells of gram-negative E.
coli on the 12% N-doped TiO2-PTFE film were reduced 5 logs.
The higher bactericidal activity was also confirmed on the gram-positive MRSA.
Compared with the N-doped TiO2 coating only, the inactivation rate of the composite material was significantly enhanced.
Utilizing the N-doped TiO2 with the PTFE composite coating could successfully remove, by UV illumination, oleic acid adsorbed on its surface.
These results demonstrate the potential applicability of the novel N-doped TiO2 photocatalyst hydrophobic composite material for both indoor antibacterial action and outdoor contamination prevention.
American Psychological Association (APA)
Yamauchi, Kentaro& Yao, Yanyan& Ochiai, Tsuyoshi& Sakai, Munetoshi& Kubota, Yoshinobu& Yamauchi, Goro. 2011. Antibacterial Activity of Hydrophobic Composite Materials Containing a Visible-Light-Sensitive Photocatalyst. Journal of Nanotechnology،Vol. 2011, no. 2011, pp.1-7.
https://search.emarefa.net/detail/BIM-467542
Modern Language Association (MLA)
Yamauchi, Kentaro…[et al.]. Antibacterial Activity of Hydrophobic Composite Materials Containing a Visible-Light-Sensitive Photocatalyst. Journal of Nanotechnology No. 2011 (2011), pp.1-7.
https://search.emarefa.net/detail/BIM-467542
American Medical Association (AMA)
Yamauchi, Kentaro& Yao, Yanyan& Ochiai, Tsuyoshi& Sakai, Munetoshi& Kubota, Yoshinobu& Yamauchi, Goro. Antibacterial Activity of Hydrophobic Composite Materials Containing a Visible-Light-Sensitive Photocatalyst. Journal of Nanotechnology. 2011. Vol. 2011, no. 2011, pp.1-7.
https://search.emarefa.net/detail/BIM-467542
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-467542