Selective Photooxidation and Photoreduction Processes at 𝐓𝐢𝐨𝟐 Surface-Modified by Grafted Vanadyl

Selective Photooxidation and Photoreduction Processes at 𝐓𝐢𝐨𝟐 Surface-Modified by Grafted Vanadyl

Titanium dioxide was surface-modified by grafting vanadyl species using vanadyl triisopropoxide as a precursor. The resulting material, (VOx)n/TiO2, was characterized by Raman spectroscopy and photoelectrochemical methods. Photocatalytic oxidation of benzyl alcohol and cyclohexene were used to test...

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Main Authors: Rossano Amadelli, Luca Samiolo, Andrea Maldotti, Alessandra Molinari, Delia Gazzoli
Format: Article
Language:English
Published: Hindawi Limited 2011-01-01
Series:International Journal of Photoenergy
Online Access:http://dx.doi.org/10.1155/2011/259453
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spelling doaj-d06996e476434666b340a69077052f592020-11-24T21:01:34ZengHindawi LimitedInternational Journal of Photoenergy1110-662X1687-529X2011-01-01201110.1155/2011/259453259453Selective Photooxidation and Photoreduction Processes at 𝐓𝐢𝐨𝟐 Surface-Modified by Grafted VanadylRossano Amadelli0Luca Samiolo1Andrea Maldotti2Alessandra Molinari3Delia Gazzoli4CNR-ISOF, U.O.S. of Ferrara, c/o Department of Chemistry, University of Ferrara, Via L. Borsari 46, I-44121 Ferrara, ItalyCNR-ISOF, U.O.S. of Ferrara, c/o Department of Chemistry, University of Ferrara, Via L. Borsari 46, I-44121 Ferrara, ItalyDepartment of Chemistry, University of Ferrara, Via L. Borsari 46, I-44121 Ferrara, ItalyDepartment of Chemistry, University of Ferrara, Via L. Borsari 46, I-44121 Ferrara, ItalyDepartment of Chemistry, University of Rome “La Sapienza”, Piazzale Aldo Moro 5, I-00185 Rome, ItalyTitanium dioxide was surface-modified by grafting vanadyl species using vanadyl triisopropoxide as a precursor. The resulting material, (VOx)n/TiO2, was characterized by Raman spectroscopy and photoelectrochemical methods. Photocatalytic oxidation of benzyl alcohol and cyclohexene were used to test oxidation selectivity and 4-nitro-benzaldehyde to assess selective photoreduction. The surface-modified TiO2 exhibits an enhanced selectivity to benzaldehyde in the photocatalytic oxidation of benzyl alcohol in an aqueous medium and an increase of cyclohexenol formation in the case of cyclohexene in nonaqueous solvent. The salient result is the 100% selective reduction of the nitrogroup in 4-nitro-benzaldehyde achieved under mild experimental conditions.http://dx.doi.org/10.1155/2011/259453
collection DOAJ
language English
format Article
sources DOAJ
author Rossano Amadelli
Luca Samiolo
Andrea Maldotti
Alessandra Molinari
Delia Gazzoli
spellingShingle Rossano Amadelli
Luca Samiolo
Andrea Maldotti
Alessandra Molinari
Delia Gazzoli
Selective Photooxidation and Photoreduction Processes at 𝐓𝐢𝐨𝟐 Surface-Modified by Grafted Vanadyl
International Journal of Photoenergy
author_facet Rossano Amadelli
Luca Samiolo
Andrea Maldotti
Alessandra Molinari
Delia Gazzoli
author_sort Rossano Amadelli
title Selective Photooxidation and Photoreduction Processes at 𝐓𝐢𝐨𝟐 Surface-Modified by Grafted Vanadyl
title_short Selective Photooxidation and Photoreduction Processes at 𝐓𝐢𝐨𝟐 Surface-Modified by Grafted Vanadyl
title_full Selective Photooxidation and Photoreduction Processes at 𝐓𝐢𝐨𝟐 Surface-Modified by Grafted Vanadyl
title_fullStr Selective Photooxidation and Photoreduction Processes at 𝐓𝐢𝐨𝟐 Surface-Modified by Grafted Vanadyl
title_full_unstemmed Selective Photooxidation and Photoreduction Processes at 𝐓𝐢𝐨𝟐 Surface-Modified by Grafted Vanadyl
title_sort selective photooxidation and photoreduction processes at 𝐓𝐢𝐨𝟐 surface-modified by grafted vanadyl
publisher Hindawi Limited
series International Journal of Photoenergy
issn 1110-662X
1687-529X
publishDate 2011-01-01
description Titanium dioxide was surface-modified by grafting vanadyl species using vanadyl triisopropoxide as a precursor. The resulting material, (VOx)n/TiO2, was characterized by Raman spectroscopy and photoelectrochemical methods. Photocatalytic oxidation of benzyl alcohol and cyclohexene were used to test oxidation selectivity and 4-nitro-benzaldehyde to assess selective photoreduction. The surface-modified TiO2 exhibits an enhanced selectivity to benzaldehyde in the photocatalytic oxidation of benzyl alcohol in an aqueous medium and an increase of cyclohexenol formation in the case of cyclohexene in nonaqueous solvent. The salient result is the 100% selective reduction of the nitrogroup in 4-nitro-benzaldehyde achieved under mild experimental conditions.
url http://dx.doi.org/10.1155/2011/259453
work_keys_str_mv AT rossanoamadelli selectivephotooxidationandphotoreductionprocessesattio2surfacemodifiedbygraftedvanadyl
AT lucasamiolo selectivephotooxidationandphotoreductionprocessesattio2surfacemodifiedbygraftedvanadyl
AT andreamaldotti selectivephotooxidationandphotoreductionprocessesattio2surfacemodifiedbygraftedvanadyl
AT alessandramolinari selectivephotooxidationandphotoreductionprocessesattio2surfacemodifiedbygraftedvanadyl
AT deliagazzoli selectivephotooxidationandphotoreductionprocessesattio2surfacemodifiedbygraftedvanadyl
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