Novel Strategy for the Development of Antibacterial TiO<sub>2</sub> Thin Film onto Polymer Substrate at Room Temperature
This work demonstrates a novel method to deposit an antibacterial TiO<sub>2</sub> thin film on a polymer substrate at room temperature. A combination of sol–gel and photon assistance was used in the experiment in order to avoid any thermal processes of thin film crystallization. The morp...
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| Format: | Article |
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MDPI AG
2021-06-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/6/1493 |
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| author | Patcharaporn Phuinthiang Dang Trung Tri Trinh Duangdao Channei Khakhanang Ratananikom Sirikasem Sirilak Wilawan Khanitchaidecha Auppatham Nakaruk |
| author_facet | Patcharaporn Phuinthiang Dang Trung Tri Trinh Duangdao Channei Khakhanang Ratananikom Sirikasem Sirilak Wilawan Khanitchaidecha Auppatham Nakaruk |
| author_sort | Patcharaporn Phuinthiang |
| collection | DOAJ |
| description | This work demonstrates a novel method to deposit an antibacterial TiO<sub>2</sub> thin film on a polymer substrate at room temperature. A combination of sol–gel and photon assistance was used in the experiment in order to avoid any thermal processes of thin film crystallization. The morphological photograph of samples indicated that the TiO<sub>2</sub> thin film was perfectly coated on the PVC substrate without any cracks or pinholes. Chemical analysis by EDS and XPS reported that the thin film consisted of titanium (Ti), oxygen (O), and carbon (C). The Raman spectrum proved that the thin film was the anatase phase of TiO<sub>2</sub> and, furthermore, that it was contaminated with carbon remaining from the photon assistance process. In addition, the optical band gap of the thin film was 3.35 eV, suggesting that the photocatalytic activity of TiO<sub>2</sub> should occur under UV-A radiation. The bacteria viability assay was examined using <i>E. coli</i> and <i>S. typhimurium</i> as indicator strains under UV-A irradiation (365 nm) at different times. The data from OD and CFU count revealed that >97% of bacteria were killed after 60 min of irradiation, and the bacteria were completely killed at 120 min for <i>E. coli</i> and 180 min for <i>S. typhimurium</i>. |
| first_indexed | 2024-03-10T10:41:36Z |
| format | Article |
| id | doaj.art-0b751c97b7b7459fbbfa2655478090f6 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T10:41:36Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-0b751c97b7b7459fbbfa2655478090f62023-11-21T22:53:01ZengMDPI AGNanomaterials2079-49912021-06-01116149310.3390/nano11061493Novel Strategy for the Development of Antibacterial TiO<sub>2</sub> Thin Film onto Polymer Substrate at Room TemperaturePatcharaporn Phuinthiang0Dang Trung Tri Trinh1Duangdao Channei2Khakhanang Ratananikom3Sirikasem Sirilak4Wilawan Khanitchaidecha5Auppatham Nakaruk6Department of Civil Engineering, Faculty of Engineering, Naresuan University, Phitsanulok 65000, ThailandCentre of Excellence for Innovation and Technology for Water Treatment, Faculty of Engineering, Naresuan University, Phitsanulok 65000, ThailandDepartment of Chemistry, Faculty of Science, Naresuan University, Phitsanulok 65000, ThailandDepartment of Science and Mathematics, Faculty of Science and Health Technology, Kalasin University, Kalasin 46230, ThailandDepartment of Community Medicine, Faculty of Medicine, Naresuan University, Phitsanulok 65000, ThailandDepartment of Civil Engineering, Faculty of Engineering, Naresuan University, Phitsanulok 65000, ThailandCentre of Excellence for Innovation and Technology for Water Treatment, Faculty of Engineering, Naresuan University, Phitsanulok 65000, ThailandThis work demonstrates a novel method to deposit an antibacterial TiO<sub>2</sub> thin film on a polymer substrate at room temperature. A combination of sol–gel and photon assistance was used in the experiment in order to avoid any thermal processes of thin film crystallization. The morphological photograph of samples indicated that the TiO<sub>2</sub> thin film was perfectly coated on the PVC substrate without any cracks or pinholes. Chemical analysis by EDS and XPS reported that the thin film consisted of titanium (Ti), oxygen (O), and carbon (C). The Raman spectrum proved that the thin film was the anatase phase of TiO<sub>2</sub> and, furthermore, that it was contaminated with carbon remaining from the photon assistance process. In addition, the optical band gap of the thin film was 3.35 eV, suggesting that the photocatalytic activity of TiO<sub>2</sub> should occur under UV-A radiation. The bacteria viability assay was examined using <i>E. coli</i> and <i>S. typhimurium</i> as indicator strains under UV-A irradiation (365 nm) at different times. The data from OD and CFU count revealed that >97% of bacteria were killed after 60 min of irradiation, and the bacteria were completely killed at 120 min for <i>E. coli</i> and 180 min for <i>S. typhimurium</i>.https://www.mdpi.com/2079-4991/11/6/1493titanium dioxideantibacterial coatingdisinfection surface<i>E. coli</i><i>S. typhimurium</i> |
| spellingShingle | Patcharaporn Phuinthiang Dang Trung Tri Trinh Duangdao Channei Khakhanang Ratananikom Sirikasem Sirilak Wilawan Khanitchaidecha Auppatham Nakaruk Novel Strategy for the Development of Antibacterial TiO<sub>2</sub> Thin Film onto Polymer Substrate at Room Temperature Nanomaterials titanium dioxide antibacterial coating disinfection surface <i>E. coli</i> <i>S. typhimurium</i> |
| title | Novel Strategy for the Development of Antibacterial TiO<sub>2</sub> Thin Film onto Polymer Substrate at Room Temperature |
| title_full | Novel Strategy for the Development of Antibacterial TiO<sub>2</sub> Thin Film onto Polymer Substrate at Room Temperature |
| title_fullStr | Novel Strategy for the Development of Antibacterial TiO<sub>2</sub> Thin Film onto Polymer Substrate at Room Temperature |
| title_full_unstemmed | Novel Strategy for the Development of Antibacterial TiO<sub>2</sub> Thin Film onto Polymer Substrate at Room Temperature |
| title_short | Novel Strategy for the Development of Antibacterial TiO<sub>2</sub> Thin Film onto Polymer Substrate at Room Temperature |
| title_sort | novel strategy for the development of antibacterial tio sub 2 sub thin film onto polymer substrate at room temperature |
| topic | titanium dioxide antibacterial coating disinfection surface <i>E. coli</i> <i>S. typhimurium</i> |
| url | https://www.mdpi.com/2079-4991/11/6/1493 |
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