Antibacterial Activity of Visible Light-Activated TiO2 Thin Films with Low Level of Fe Doping
Development of effective antibacterial visible light-activated photocatalytic materials in industries including wastewater treatment and food industry has attracted increasing attention. In this work, Fe-doped TiO2 thin films with different doping levels on a glass substrate were prepared by the sol...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/5819805 |
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| author | Dan Meng Xiuhua Liu Yun Xie Yang Du Yong Yang Chao Xiao |
| author_facet | Dan Meng Xiuhua Liu Yun Xie Yang Du Yong Yang Chao Xiao |
| author_sort | Dan Meng |
| collection | DOAJ |
| description | Development of effective antibacterial visible light-activated photocatalytic materials in industries including wastewater treatment and food industry has attracted increasing attention. In this work, Fe-doped TiO2 thin films with different doping levels on a glass substrate were prepared by the sol-gel dip-coating method. The as-prepared films were characterized by Raman spectroscopy, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and atomic force microscope (AFM). Raman spectroscopy and XRD results show the crystalline phase of titanium dioxide was anatase, and the range of the crystal size for the films was 19.24–22.24 nm. XPS results indicate that iron was in the form of Fe3+ in Fe-doped TiO2 films. Regarding the antibacterial properties of TiO2 films, the order of antibacterial activity of TiO2 films was 0.1 at% Fe > 0.5 at% Fe > 1.0 at% TiO2 > bare TiO2 > 2.0 at% Fe > 3.45 at% Fe. 0.1 at% of Fe is the optimum dopant ratio related to antibacterial activity. 0.1 at% Fe-doped TiO2 film is highly efficient in inactivating E. coli under 3 h of visible light irradiation, and it remains efficient even in real dye waste water. |
| format | Article |
| id | doaj-art-4f6f75ed141044ab86b8ca7f96b2116b |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-4f6f75ed141044ab86b8ca7f96b2116b2025-02-03T05:47:57ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422019-01-01201910.1155/2019/58198055819805Antibacterial Activity of Visible Light-Activated TiO2 Thin Films with Low Level of Fe DopingDan Meng0Xiuhua Liu1Yun Xie2Yang Du3Yong Yang4Chao Xiao5Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, ChinaInstitute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, ChinaInstitute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, ChinaInstitute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, ChinaInstitute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, ChinaInstitute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, ChinaDevelopment of effective antibacterial visible light-activated photocatalytic materials in industries including wastewater treatment and food industry has attracted increasing attention. In this work, Fe-doped TiO2 thin films with different doping levels on a glass substrate were prepared by the sol-gel dip-coating method. The as-prepared films were characterized by Raman spectroscopy, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and atomic force microscope (AFM). Raman spectroscopy and XRD results show the crystalline phase of titanium dioxide was anatase, and the range of the crystal size for the films was 19.24–22.24 nm. XPS results indicate that iron was in the form of Fe3+ in Fe-doped TiO2 films. Regarding the antibacterial properties of TiO2 films, the order of antibacterial activity of TiO2 films was 0.1 at% Fe > 0.5 at% Fe > 1.0 at% TiO2 > bare TiO2 > 2.0 at% Fe > 3.45 at% Fe. 0.1 at% of Fe is the optimum dopant ratio related to antibacterial activity. 0.1 at% Fe-doped TiO2 film is highly efficient in inactivating E. coli under 3 h of visible light irradiation, and it remains efficient even in real dye waste water.http://dx.doi.org/10.1155/2019/5819805 |
| spellingShingle | Dan Meng Xiuhua Liu Yun Xie Yang Du Yong Yang Chao Xiao Antibacterial Activity of Visible Light-Activated TiO2 Thin Films with Low Level of Fe Doping Advances in Materials Science and Engineering |
| title | Antibacterial Activity of Visible Light-Activated TiO2 Thin Films with Low Level of Fe Doping |
| title_full | Antibacterial Activity of Visible Light-Activated TiO2 Thin Films with Low Level of Fe Doping |
| title_fullStr | Antibacterial Activity of Visible Light-Activated TiO2 Thin Films with Low Level of Fe Doping |
| title_full_unstemmed | Antibacterial Activity of Visible Light-Activated TiO2 Thin Films with Low Level of Fe Doping |
| title_short | Antibacterial Activity of Visible Light-Activated TiO2 Thin Films with Low Level of Fe Doping |
| title_sort | antibacterial activity of visible light activated tio2 thin films with low level of fe doping |
| url | http://dx.doi.org/10.1155/2019/5819805 |
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