Transition metal doped TiO2: physical properties and photocatalytic behaviour
Two probe photocatalytic reactions, i.e. ethanoic acid and 4-nitrophenol photooxidation, were carried out in different experimental conditions by using suspensions of transition metal (Co, Cr, Cu, Fe, Mo, V and W) doped polycrystalline TiO2 powders in aqueous systems. A beneficial influence of the p...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2001-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/S1110662X01000216 |
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| author | A. Di Paola S. Ikeda G. Marcì B. Ohtani L. Palmisano |
| author_facet | A. Di Paola S. Ikeda G. Marcì B. Ohtani L. Palmisano |
| author_sort | A. Di Paola |
| collection | DOAJ |
| description | Two probe photocatalytic reactions, i.e. ethanoic acid and 4-nitrophenol photooxidation, were
carried out in different experimental conditions by using suspensions of transition metal (Co, Cr, Cu, Fe,
Mo, V and W) doped polycrystalline TiO2 powders in aqueous systems. A beneficial influence of the presence
of metal species was observed only with the samples containing copper and tungsten. In particular,
the TiO2/Cu powders showed to be more photoactive of bare TiO2 for the ethanoic acid oxidation while the
TiO2/W samples were more efficient for 4-nitrophenol degradation. A tentative interpretation is provided
on the basis of the values of the points of zero charge of the powders and of the rate constants of recombination
of photogenerated electrons and holes, determined by femtosecond pump-probe diffuse reflectance
spectroscopy (PP-DRS). |
| format | Article |
| id | doaj-art-e9f4e613bd4f4e258af75e9fa0b0dc01 |
| institution | OA Journals |
| issn | 1110-662X |
| language | English |
| publishDate | 2001-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-e9f4e613bd4f4e258af75e9fa0b0dc012025-08-20T02:21:54ZengWileyInternational Journal of Photoenergy1110-662X2001-01-013417117610.1155/S1110662X01000216Transition metal doped TiO2: physical properties and photocatalytic behaviourA. Di Paola0S. Ikeda1G. Marcì2B. Ohtani3L. Palmisano4Dipartimento di Ingegneria Chimica dei Processi e dei Materiali, Università di Palermo, Viale delle Scienze, Palermo 90128, ItalyCatalysis Research Center, Hokkaido University, Sapporo 060-0811, JapanDipartimento di Ingegneria Chimica dei Processi e dei Materiali, Università di Palermo, Viale delle Scienze, Palermo 90128, ItalyCatalysis Research Center, Hokkaido University, Sapporo 060-0811, JapanDipartimento di Ingegneria Chimica dei Processi e dei Materiali, Università di Palermo, Viale delle Scienze, Palermo 90128, ItalyTwo probe photocatalytic reactions, i.e. ethanoic acid and 4-nitrophenol photooxidation, were carried out in different experimental conditions by using suspensions of transition metal (Co, Cr, Cu, Fe, Mo, V and W) doped polycrystalline TiO2 powders in aqueous systems. A beneficial influence of the presence of metal species was observed only with the samples containing copper and tungsten. In particular, the TiO2/Cu powders showed to be more photoactive of bare TiO2 for the ethanoic acid oxidation while the TiO2/W samples were more efficient for 4-nitrophenol degradation. A tentative interpretation is provided on the basis of the values of the points of zero charge of the powders and of the rate constants of recombination of photogenerated electrons and holes, determined by femtosecond pump-probe diffuse reflectance spectroscopy (PP-DRS).http://dx.doi.org/10.1155/S1110662X01000216 |
| spellingShingle | A. Di Paola S. Ikeda G. Marcì B. Ohtani L. Palmisano Transition metal doped TiO2: physical properties and photocatalytic behaviour International Journal of Photoenergy |
| title | Transition metal doped TiO2: physical properties and photocatalytic behaviour |
| title_full | Transition metal doped TiO2: physical properties and photocatalytic behaviour |
| title_fullStr | Transition metal doped TiO2: physical properties and photocatalytic behaviour |
| title_full_unstemmed | Transition metal doped TiO2: physical properties and photocatalytic behaviour |
| title_short | Transition metal doped TiO2: physical properties and photocatalytic behaviour |
| title_sort | transition metal doped tio2 physical properties and photocatalytic behaviour |
| url | http://dx.doi.org/10.1155/S1110662X01000216 |
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