دورية أكاديمية
Antibacterial Activity of Hydrophobic Composite Materials Containing a Visible-Light-Sensitive Photocatalyst
| العنوان: | Antibacterial Activity of Hydrophobic Composite Materials Containing a Visible-Light-Sensitive Photocatalyst |
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| المؤلفون: | Kentaro Yamauchi, Yanyan Yao, Tsuyoshi Ochiai, Munetoshi Sakai, Yoshinobu Kubota, Goro Yamauchi |
| المصدر: | Journal of Nanotechnology, Vol 2011 (2011) |
| بيانات النشر: | Hindawi Limited, 2011. |
| سنة النشر: | 2011 |
| المجموعة: | LCC:Technology (General) |
| مصطلحات موضوعية: | Technology (General), T1-995 |
| الوصف: | 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. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1687-9503 1687-9511 |
| Relation: | https://doaj.org/toc/1687-9503; https://doaj.org/toc/1687-9511 |
| DOI: | 10.1155/2011/380979 |
| URL الوصول: | https://doaj.org/article/09ec41e0f6f445cba79d7a36d8fb062d |
| رقم الأكسشن: | edsdoj.09ec41e0f6f445cba79d7a36d8fb062d |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 16879503 16879511 |
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| DOI: | 10.1155/2011/380979 |