Preparation of Fluorine-Doped TiO2 Photocatalysts with Controlled Crystalline Structure
Nanocrystalline F-doped TiO2 powders were prepared by sol-gel route. The thermal behavior of the powders was recorded by DTA/TG technique. The crystalline phase of the fluorinated TiO2 powders was determined by X-ray diffraction technique. It was demonstrated that F-doping using CF3COOH favors the f...
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| Format: | Article |
| Language: | English |
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Wiley
2008-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2008/534038 |
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| author | N. Todorova T. Giannakopoulou G. Romanos T. Vaimakis Jiaguo Yu C. Trapalis |
| author_facet | N. Todorova T. Giannakopoulou G. Romanos T. Vaimakis Jiaguo Yu C. Trapalis |
| author_sort | N. Todorova |
| collection | DOAJ |
| description | Nanocrystalline F-doped TiO2 powders were prepared by sol-gel route. The thermal behavior of the powders was recorded by DTA/TG technique. The crystalline phase of the fluorinated TiO2 powders was determined by X-ray diffraction technique. It was demonstrated that F-doping using CF3COOH favors the formation of rutile along with anatase phase even at low temperature. Moreover, the rutile's phase content increases with the increase of the quantity of the fluorine precursor in the starting solution. The surface area of the powders and the pore size distribution were studied by N2 adsorption-desorption using BET and BJH methods. X-ray photoelectron spectroscopy (XPS) revealed that the fluorine is presented in the TiO2 powders mainly as metal fluoride in quantities ∼16 at %. The F-doped TiO2 showed a red-shift absorption in UV-vis region which was attributed to the increased content of rutile phase in the powders. The powders exhibited enhanced photocatalytic activity in decomposition of acetone. |
| format | Article |
| id | doaj-art-1f067337bf8645feb1519d658089009d |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2008-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-1f067337bf8645feb1519d658089009d2025-02-03T01:03:00ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2008-01-01200810.1155/2008/534038534038Preparation of Fluorine-Doped TiO2 Photocatalysts with Controlled Crystalline StructureN. Todorova0T. Giannakopoulou1G. Romanos2T. Vaimakis3Jiaguo Yu4C. Trapalis5Institute of Materials Science, National Center for Scientific Research (NCSR) “Demokritos”, 15310 Attica, GreeceInstitute of Materials Science, National Center for Scientific Research (NCSR) “Demokritos”, 15310 Attica, GreeceInstitute of Physical Chemistry, National Center for Scientific Research (NCSR) “Demokritos”, 15310 Attica, GreeceDepartment of Chemistry, University of Ioannina, 45110 Ioannina, GreeceState Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, ChinaInstitute of Materials Science, National Center for Scientific Research (NCSR) “Demokritos”, 15310 Attica, GreeceNanocrystalline F-doped TiO2 powders were prepared by sol-gel route. The thermal behavior of the powders was recorded by DTA/TG technique. The crystalline phase of the fluorinated TiO2 powders was determined by X-ray diffraction technique. It was demonstrated that F-doping using CF3COOH favors the formation of rutile along with anatase phase even at low temperature. Moreover, the rutile's phase content increases with the increase of the quantity of the fluorine precursor in the starting solution. The surface area of the powders and the pore size distribution were studied by N2 adsorption-desorption using BET and BJH methods. X-ray photoelectron spectroscopy (XPS) revealed that the fluorine is presented in the TiO2 powders mainly as metal fluoride in quantities ∼16 at %. The F-doped TiO2 showed a red-shift absorption in UV-vis region which was attributed to the increased content of rutile phase in the powders. The powders exhibited enhanced photocatalytic activity in decomposition of acetone.http://dx.doi.org/10.1155/2008/534038 |
| spellingShingle | N. Todorova T. Giannakopoulou G. Romanos T. Vaimakis Jiaguo Yu C. Trapalis Preparation of Fluorine-Doped TiO2 Photocatalysts with Controlled Crystalline Structure International Journal of Photoenergy |
| title | Preparation of Fluorine-Doped TiO2 Photocatalysts with Controlled Crystalline Structure |
| title_full | Preparation of Fluorine-Doped TiO2 Photocatalysts with Controlled Crystalline Structure |
| title_fullStr | Preparation of Fluorine-Doped TiO2 Photocatalysts with Controlled Crystalline Structure |
| title_full_unstemmed | Preparation of Fluorine-Doped TiO2 Photocatalysts with Controlled Crystalline Structure |
| title_short | Preparation of Fluorine-Doped TiO2 Photocatalysts with Controlled Crystalline Structure |
| title_sort | preparation of fluorine doped tio2 photocatalysts with controlled crystalline structure |
| url | http://dx.doi.org/10.1155/2008/534038 |
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