Preparation of Porous F-WO3/TiO2 Films with Visible-Light Photocatalytic Activity by Microarc Oxidation
Porous F-WO3/TiO2 (mTiO2) films are prepared on titanium sheet substrates using microarc oxidation (MAO) technique. The X-ray diffraction patterns show that visible-light (Vis) enabling mTiO2 films with a very high content of anatase TiO2 and high loading of WO3 are successfully synthesized at a low...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2012/285129 |
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| author | Chung-Wei Yeh Kee-Rong Wu Chung-Hsuang Hung Hao-Cheng Chang Chuan-Jen Hsu |
| author_facet | Chung-Wei Yeh Kee-Rong Wu Chung-Hsuang Hung Hao-Cheng Chang Chuan-Jen Hsu |
| author_sort | Chung-Wei Yeh |
| collection | DOAJ |
| description | Porous F-WO3/TiO2 (mTiO2) films are prepared on titanium sheet substrates using microarc oxidation (MAO) technique. The X-ray diffraction patterns show that visible-light (Vis) enabling mTiO2 films with a very high content of anatase TiO2 and high loading of WO3 are successfully synthesized at a low applied voltage of 300 V using electrolyte contenting NaF and Na2WO4 without subsequent heat treatment. The cross-sectional transmission electron microscopy micrograph reveals that the mTiO2 films feature porous networks connected by many micron pores. The diffused reflection spectrum displays broad absorbance across the UV-Vis regions and a significant red shift in the band gap energy (∼2.23 eV) for the mTiO2 film. Owing to the high specific surface area from the porous microstructure, the mTiO2 film shows a 61% and 50% rate increase in the photocatalytic dye degradation, as compared with the N,C-codoped TiO2 films under UV and Vis irradiation, respectively. |
| format | Article |
| id | doaj-art-44ce1632073d4c4aa4e2514880c4dd7a |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-44ce1632073d4c4aa4e2514880c4dd7a2025-08-20T03:36:45ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2012-01-01201210.1155/2012/285129285129Preparation of Porous F-WO3/TiO2 Films with Visible-Light Photocatalytic Activity by Microarc OxidationChung-Wei Yeh0Kee-Rong Wu1Chung-Hsuang Hung2Hao-Cheng Chang3Chuan-Jen Hsu4Department of Information System, Kao Yuan University, Kaohsiung 811, TaiwanDepartment of Marine Engineering, National Kaohsiung Marine University, Kaohsiung 811, TaiwanDepartment of Safety, Health and Environmental Engineering, National Kaohsiung First University of Science and Technology, Kaohsiung 811, TaiwanDepartment of Marine Engineering, National Kaohsiung Marine University, Kaohsiung 811, TaiwanMetal Industries Research and Development Centre, Kaohsiung 811, TaiwanPorous F-WO3/TiO2 (mTiO2) films are prepared on titanium sheet substrates using microarc oxidation (MAO) technique. The X-ray diffraction patterns show that visible-light (Vis) enabling mTiO2 films with a very high content of anatase TiO2 and high loading of WO3 are successfully synthesized at a low applied voltage of 300 V using electrolyte contenting NaF and Na2WO4 without subsequent heat treatment. The cross-sectional transmission electron microscopy micrograph reveals that the mTiO2 films feature porous networks connected by many micron pores. The diffused reflection spectrum displays broad absorbance across the UV-Vis regions and a significant red shift in the band gap energy (∼2.23 eV) for the mTiO2 film. Owing to the high specific surface area from the porous microstructure, the mTiO2 film shows a 61% and 50% rate increase in the photocatalytic dye degradation, as compared with the N,C-codoped TiO2 films under UV and Vis irradiation, respectively.http://dx.doi.org/10.1155/2012/285129 |
| spellingShingle | Chung-Wei Yeh Kee-Rong Wu Chung-Hsuang Hung Hao-Cheng Chang Chuan-Jen Hsu Preparation of Porous F-WO3/TiO2 Films with Visible-Light Photocatalytic Activity by Microarc Oxidation International Journal of Photoenergy |
| title | Preparation of Porous F-WO3/TiO2 Films with Visible-Light Photocatalytic Activity by Microarc Oxidation |
| title_full | Preparation of Porous F-WO3/TiO2 Films with Visible-Light Photocatalytic Activity by Microarc Oxidation |
| title_fullStr | Preparation of Porous F-WO3/TiO2 Films with Visible-Light Photocatalytic Activity by Microarc Oxidation |
| title_full_unstemmed | Preparation of Porous F-WO3/TiO2 Films with Visible-Light Photocatalytic Activity by Microarc Oxidation |
| title_short | Preparation of Porous F-WO3/TiO2 Films with Visible-Light Photocatalytic Activity by Microarc Oxidation |
| title_sort | preparation of porous f wo3 tio2 films with visible light photocatalytic activity by microarc oxidation |
| url | http://dx.doi.org/10.1155/2012/285129 |
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