Nanocrystalline TiO2 with enhanced photoinduced charge separation as catalyst for the phenol degradation
Nanocrystalline TiO2 catalysts based on pure rutile (R100) and a 30% of anatase and 70% of rutile (R70) were synthesized by the sol-gel method, using Pluronic PE 6400 as templating agent. Catalysts were characterized in terms of structural and morphological properties; moreover, the formation of par...
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| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2006-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/IJP/2006/90809 |
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| _version_ | 1832554455274356736 |
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| author | Carmen Canevali Franca Morazzoni Roberto Scotti Ignazio Renato Bellobono Marco Giusti Marco Sommariva Massimiliano D'Arienzo Andrea Testino Anna Musinu Carla Cannas |
| author_facet | Carmen Canevali Franca Morazzoni Roberto Scotti Ignazio Renato Bellobono Marco Giusti Marco Sommariva Massimiliano D'Arienzo Andrea Testino Anna Musinu Carla Cannas |
| author_sort | Carmen Canevali |
| collection | DOAJ |
| description | Nanocrystalline TiO2 catalysts based on pure rutile (R100) and
a 30% of anatase and 70% of rutile (R70) were synthesized by the
sol-gel method, using Pluronic PE 6400 as templating agent.
Catalysts were characterized in terms of structural and
morphological properties; moreover, the formation of paramagnetic
charge carriers under UV irradiation was studied and related to
the activity of TiO2 in the photoinduced degradation of phenol.
With respect to Degussa P25, the two sol-gel catalysts show lower
surface area and a wider pore size distribution. The EPR spectra
recorded under UV irradiation show enhanced charge separation in
the sol-gel samples, with the O− species in higher amount than
in Degussa P25. This result is in agreement with the high
catalytic activity of R100 sample in the photoinduced degradation
of phenol, very similar to that displayed by Degussa P25 and
higher than that of R70 sample. |
| format | Article |
| id | doaj-art-cc18941f4de34eff8ce41aa7058cd6c7 |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2006-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-cc18941f4de34eff8ce41aa7058cd6c72025-02-03T05:51:34ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2006-01-01200610.1155/IJP/2006/9080990809Nanocrystalline TiO2 with enhanced photoinduced charge separation as catalyst for the phenol degradationCarmen Canevali0Franca Morazzoni1Roberto Scotti2Ignazio Renato Bellobono3Marco Giusti4Marco Sommariva5Massimiliano D'Arienzo6Andrea Testino7Anna Musinu8Carla Cannas9Department of Materials Science, University of Milano-Bicocca, Via R.Cozzi 53, Milan 20125, ItalyDepartment of Materials Science, University of Milano-Bicocca, Via R.Cozzi 53, Milan 20125, ItalyDepartment of Materials Science, University of Milano-Bicocca, Via R.Cozzi 53, Milan 20125, ItalyEnvironmental Research Centre, University of Milan, Via C. Golgi 19, Milan 20133, ItalyDepartment of Materials Science, University of Milano-Bicocca, Via R.Cozzi 53, Milan 20125, ItalyDepartment of Materials Science, University of Milano-Bicocca, Via R.Cozzi 53, Milan 20125, ItalyDepartment of Materials Science, University of Milano-Bicocca, Via R.Cozzi 53, Milan 20125, ItalyDepartment of Materials Science, University of Milano-Bicocca, Via R.Cozzi 53, Milan 20125, ItalyDipartimento di Scienze Chimiche, Università di Cagliari, INSTM, SS554 Bivio per Sestu, Monserrato (CA) 09042, ItalyDipartimento di Scienze Chimiche, Università di Cagliari, INSTM, SS554 Bivio per Sestu, Monserrato (CA) 09042, ItalyNanocrystalline TiO2 catalysts based on pure rutile (R100) and a 30% of anatase and 70% of rutile (R70) were synthesized by the sol-gel method, using Pluronic PE 6400 as templating agent. Catalysts were characterized in terms of structural and morphological properties; moreover, the formation of paramagnetic charge carriers under UV irradiation was studied and related to the activity of TiO2 in the photoinduced degradation of phenol. With respect to Degussa P25, the two sol-gel catalysts show lower surface area and a wider pore size distribution. The EPR spectra recorded under UV irradiation show enhanced charge separation in the sol-gel samples, with the O− species in higher amount than in Degussa P25. This result is in agreement with the high catalytic activity of R100 sample in the photoinduced degradation of phenol, very similar to that displayed by Degussa P25 and higher than that of R70 sample.http://dx.doi.org/10.1155/IJP/2006/90809 |
| spellingShingle | Carmen Canevali Franca Morazzoni Roberto Scotti Ignazio Renato Bellobono Marco Giusti Marco Sommariva Massimiliano D'Arienzo Andrea Testino Anna Musinu Carla Cannas Nanocrystalline TiO2 with enhanced photoinduced charge separation as catalyst for the phenol degradation International Journal of Photoenergy |
| title | Nanocrystalline TiO2 with enhanced photoinduced charge separation as catalyst for the phenol degradation |
| title_full | Nanocrystalline TiO2 with enhanced photoinduced charge separation as catalyst for the phenol degradation |
| title_fullStr | Nanocrystalline TiO2 with enhanced photoinduced charge separation as catalyst for the phenol degradation |
| title_full_unstemmed | Nanocrystalline TiO2 with enhanced photoinduced charge separation as catalyst for the phenol degradation |
| title_short | Nanocrystalline TiO2 with enhanced photoinduced charge separation as catalyst for the phenol degradation |
| title_sort | nanocrystalline tio2 with enhanced photoinduced charge separation as catalyst for the phenol degradation |
| url | http://dx.doi.org/10.1155/IJP/2006/90809 |
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