Activation Energy for Dibenzofuran Desorption from Fe/TiO and Ce/TiO Photocatalysts Coated onto Glass Fibres
In this work, TiO 2 , Fe 3+ /TiO 2 and Ce 3+ /TiO 2 photocatalytic films were respectively immobilized on glass fibres via the sol—gel technique to prepare supported photocatalysts. Temperature programmed desorption (TPD) experiments were conducted to measure the TPD curves for the removal of dibenz...
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2005-06-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/026361705774355469 |
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| _version_ | 1832544708793991168 |
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| author | Qibin Xia Zhong Li Hongxia Xi Kefeng Xu |
| author_facet | Qibin Xia Zhong Li Hongxia Xi Kefeng Xu |
| author_sort | Qibin Xia |
| collection | DOAJ |
| description | In this work, TiO 2 , Fe 3+ /TiO 2 and Ce 3+ /TiO 2 photocatalytic films were respectively immobilized on glass fibres via the sol—gel technique to prepare supported photocatalysts. Temperature programmed desorption (TPD) experiments were conducted to measure the TPD curves for the removal of dibenzofuran from these photocatalysts, from which the activation energy for dibenzofuran desorption from the photocatalyst surfaces was estimated. The results showed that the activation energies for dibenzofuran desorption from the photocatalysts TiO 2 , Ce 3+ /TiO 2 and Fe 3+ /TiO 2 coated separately onto the glass fibres were 16.41 kJ/mol, 22.55 kJ/mol and 33.59 kJ/mol, respectively, while the hardness values of the ions Fe 3+ , Ce 3+ and Ti 4+ were respectively 13.1 eV, 11.9 eV and 10.6 eV. The data indicated that the use of Fe 3+ or Ce 3+ ions for doping a TiO 2 photo-catalyst increased the local hardness of the doped TiO 2 photocatalyst surface. This, in turn, increased the activation energy for the desorption of dibenzofuran from such a TiO 2 photocatalyst surface. |
| format | Article |
| id | doaj-art-af05b00a60364aa692b794f0d8a55975 |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 2005-06-01 |
| publisher | SAGE Publishing |
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| series | Adsorption Science & Technology |
| spelling | doaj-art-af05b00a60364aa692b794f0d8a559752025-02-03T10:07:34ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382005-06-012310.1260/026361705774355469Activation Energy for Dibenzofuran Desorption from Fe/TiO and Ce/TiO Photocatalysts Coated onto Glass FibresQibin XiaZhong LiHongxia XiKefeng XuIn this work, TiO 2 , Fe 3+ /TiO 2 and Ce 3+ /TiO 2 photocatalytic films were respectively immobilized on glass fibres via the sol—gel technique to prepare supported photocatalysts. Temperature programmed desorption (TPD) experiments were conducted to measure the TPD curves for the removal of dibenzofuran from these photocatalysts, from which the activation energy for dibenzofuran desorption from the photocatalyst surfaces was estimated. The results showed that the activation energies for dibenzofuran desorption from the photocatalysts TiO 2 , Ce 3+ /TiO 2 and Fe 3+ /TiO 2 coated separately onto the glass fibres were 16.41 kJ/mol, 22.55 kJ/mol and 33.59 kJ/mol, respectively, while the hardness values of the ions Fe 3+ , Ce 3+ and Ti 4+ were respectively 13.1 eV, 11.9 eV and 10.6 eV. The data indicated that the use of Fe 3+ or Ce 3+ ions for doping a TiO 2 photo-catalyst increased the local hardness of the doped TiO 2 photocatalyst surface. This, in turn, increased the activation energy for the desorption of dibenzofuran from such a TiO 2 photocatalyst surface.https://doi.org/10.1260/026361705774355469 |
| spellingShingle | Qibin Xia Zhong Li Hongxia Xi Kefeng Xu Activation Energy for Dibenzofuran Desorption from Fe/TiO and Ce/TiO Photocatalysts Coated onto Glass Fibres Adsorption Science & Technology |
| title | Activation Energy for Dibenzofuran Desorption from Fe/TiO and Ce/TiO Photocatalysts Coated onto Glass Fibres |
| title_full | Activation Energy for Dibenzofuran Desorption from Fe/TiO and Ce/TiO Photocatalysts Coated onto Glass Fibres |
| title_fullStr | Activation Energy for Dibenzofuran Desorption from Fe/TiO and Ce/TiO Photocatalysts Coated onto Glass Fibres |
| title_full_unstemmed | Activation Energy for Dibenzofuran Desorption from Fe/TiO and Ce/TiO Photocatalysts Coated onto Glass Fibres |
| title_short | Activation Energy for Dibenzofuran Desorption from Fe/TiO and Ce/TiO Photocatalysts Coated onto Glass Fibres |
| title_sort | activation energy for dibenzofuran desorption from fe tio and ce tio photocatalysts coated onto glass fibres |
| url | https://doi.org/10.1260/026361705774355469 |
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