Photocatalytic Degradation of Organic Dyes under Visible Light on N-Doped TiO2 Photocatalysts
This study was focused on the application of white and blue light emitting diodes (LEDs) as sources for the photocatalytic degradation of organic dyes in liquid phase with visible light. The photocatalytic activity of N-doped titanium dioxide, synthesized by direct hydrolysis of titanium tetraisopro...
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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/10.1155/2012/626759 |
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| _version_ | 1832559443410157568 |
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| author | Olga Sacco Marco Stoller Vincenzo Vaiano Paolo Ciambelli Angelo Chianese Diana Sannino |
| author_facet | Olga Sacco Marco Stoller Vincenzo Vaiano Paolo Ciambelli Angelo Chianese Diana Sannino |
| author_sort | Olga Sacco |
| collection | DOAJ |
| description | This study was focused on the application of white and blue light emitting diodes (LEDs) as sources for the photocatalytic degradation of organic dyes in liquid phase with visible light. The photocatalytic activity of N-doped titanium dioxide, synthesized by direct hydrolysis of titanium tetraisopropoxide with ammonia, was evaluated by means of a batch photoreactor. The bandgap energy of titanium dioxide was moved in the visible range from 3.3 eV to 2.5 eV. The visible light responsive photocatalysts showed remarkably effective activity in decolorization process and in the removal of total organic carbon. Methylene blue was also used as a model dye to study the influence of several parameters such as catalyst weight and initial concentration. The effect of dye on the photocatalytic performance was verified with methyl orange (MO). The results demonstrated that the right selection of operating conditions allows to effectively degrade different dyes with the N-doped TiO2 photocatalysts irradiated with visible light emitted by LEDs. |
| format | Article |
| id | doaj-art-bdc31b54ec624ebe956ac3c5e6aa5060 |
| 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-bdc31b54ec624ebe956ac3c5e6aa50602025-02-03T01:30:10ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2012-01-01201210.1155/2012/626759626759Photocatalytic Degradation of Organic Dyes under Visible Light on N-Doped TiO2 PhotocatalystsOlga Sacco0Marco Stoller1Vincenzo Vaiano2Paolo Ciambelli3Angelo Chianese4Diana Sannino5Department of Industrial Engineering, University of Salerno, Via Ponte Don Melillo, Salerno, 84084 Fisciano, ItalyDepartment of Chemical Engineering, University of Rome “La Sapienza”, Via Eudossiana 18, 00184 Rome, ItalyDepartment of Industrial Engineering, University of Salerno, Via Ponte Don Melillo, Salerno, 84084 Fisciano, ItalyDepartment of Industrial Engineering, University of Salerno, Via Ponte Don Melillo, Salerno, 84084 Fisciano, ItalyDepartment of Chemical Engineering, University of Rome “La Sapienza”, Via Eudossiana 18, 00184 Rome, ItalyDepartment of Industrial Engineering, University of Salerno, Via Ponte Don Melillo, Salerno, 84084 Fisciano, ItalyThis study was focused on the application of white and blue light emitting diodes (LEDs) as sources for the photocatalytic degradation of organic dyes in liquid phase with visible light. The photocatalytic activity of N-doped titanium dioxide, synthesized by direct hydrolysis of titanium tetraisopropoxide with ammonia, was evaluated by means of a batch photoreactor. The bandgap energy of titanium dioxide was moved in the visible range from 3.3 eV to 2.5 eV. The visible light responsive photocatalysts showed remarkably effective activity in decolorization process and in the removal of total organic carbon. Methylene blue was also used as a model dye to study the influence of several parameters such as catalyst weight and initial concentration. The effect of dye on the photocatalytic performance was verified with methyl orange (MO). The results demonstrated that the right selection of operating conditions allows to effectively degrade different dyes with the N-doped TiO2 photocatalysts irradiated with visible light emitted by LEDs.http://dx.doi.org/10.1155/2012/626759 |
| spellingShingle | Olga Sacco Marco Stoller Vincenzo Vaiano Paolo Ciambelli Angelo Chianese Diana Sannino Photocatalytic Degradation of Organic Dyes under Visible Light on N-Doped TiO2 Photocatalysts International Journal of Photoenergy |
| title | Photocatalytic Degradation of Organic Dyes under Visible Light on N-Doped TiO2 Photocatalysts |
| title_full | Photocatalytic Degradation of Organic Dyes under Visible Light on N-Doped TiO2 Photocatalysts |
| title_fullStr | Photocatalytic Degradation of Organic Dyes under Visible Light on N-Doped TiO2 Photocatalysts |
| title_full_unstemmed | Photocatalytic Degradation of Organic Dyes under Visible Light on N-Doped TiO2 Photocatalysts |
| title_short | Photocatalytic Degradation of Organic Dyes under Visible Light on N-Doped TiO2 Photocatalysts |
| title_sort | photocatalytic degradation of organic dyes under visible light on n doped tio2 photocatalysts |
| url | http://dx.doi.org/10.1155/2012/626759 |
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