Effect of scandium on the structural and photocatalytic properties of titanium dioxide thin films

Detalhes bibliográficos
Autor(a) principal: Cavalheiro, A. A. [UNESP]
Data de Publicação: 2008
Outros Autores: Bruno, J. C. [UNESP], Saeki, M. J. [UNESP], Valente, J. P S [UNESP], Florentino, A. O. [UNESP]
Tipo de documento: Artigo de conferência
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1007/s10853-007-1743-2
http://hdl.handle.net/11449/70237
Resumo: Pure and scandium doped-TiO2 thin films were prepared by the sol-gel process and coated by dip coating. The effects of scandium on the phase formation, optical properties and photoactivity of the TiO2 thin films were investigated. The lattice parameters and the crystallinity of the anatase phase, characterized by the Rietveld method, demonstrated that scandium doping affected the structural parameters and crystallinity of the films, modifying the absorption edge. A direct correlation was found between band gap energy and photodegradation efficiency, with lower values of band gap energy augmenting this efficiency. Moreover, a significant improvement in the catalyst's photodegradation efficiency was attained with a scandium concentration of 5.0 mol%. © 2007 Springer Science+Business Media, LLC.
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spelling Effect of scandium on the structural and photocatalytic properties of titanium dioxide thin filmsDoping (additives)Molecular structureOxide filmsPhotocatalysisRietveld methodTitanium compoundsCrystallinityPhotoactivityStructural parametersThin filmsPure and scandium doped-TiO2 thin films were prepared by the sol-gel process and coated by dip coating. The effects of scandium on the phase formation, optical properties and photoactivity of the TiO2 thin films were investigated. The lattice parameters and the crystallinity of the anatase phase, characterized by the Rietveld method, demonstrated that scandium doping affected the structural parameters and crystallinity of the films, modifying the absorption edge. A direct correlation was found between band gap energy and photodegradation efficiency, with lower values of band gap energy augmenting this efficiency. Moreover, a significant improvement in the catalyst's photodegradation efficiency was attained with a scandium concentration of 5.0 mol%. © 2007 Springer Science+Business Media, LLC.Depto de Química Instituto de Biociências UNESP, Distrito de Rubião Junior, s/n, 18618-000 Botucatu, SPDepto de Química Instituto de Biociências UNESP, Distrito de Rubião Junior, s/n, 18618-000 Botucatu, SPUniversidade Estadual Paulista (Unesp)Cavalheiro, A. A. [UNESP]Bruno, J. C. [UNESP]Saeki, M. J. [UNESP]Valente, J. P S [UNESP]Florentino, A. O. [UNESP]2014-05-27T11:22:46Z2014-05-27T11:22:46Z2008-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject602-608http://dx.doi.org/10.1007/s10853-007-1743-2Journal of Materials Science, v. 43, n. 2, p. 602-608, 2008.0022-24611573-4803http://hdl.handle.net/11449/7023710.1007/s10853-007-1743-22-s2.0-372490685761802982806436894Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Materials Science2.9930,8070,807info:eu-repo/semantics/openAccess2021-10-23T21:44:09Zoai:repositorio.unesp.br:11449/70237Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:40:37.656123Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Effect of scandium on the structural and photocatalytic properties of titanium dioxide thin films
title Effect of scandium on the structural and photocatalytic properties of titanium dioxide thin films
spellingShingle Effect of scandium on the structural and photocatalytic properties of titanium dioxide thin films
Cavalheiro, A. A. [UNESP]
Doping (additives)
Molecular structure
Oxide films
Photocatalysis
Rietveld method
Titanium compounds
Crystallinity
Photoactivity
Structural parameters
Thin films
title_short Effect of scandium on the structural and photocatalytic properties of titanium dioxide thin films
title_full Effect of scandium on the structural and photocatalytic properties of titanium dioxide thin films
title_fullStr Effect of scandium on the structural and photocatalytic properties of titanium dioxide thin films
title_full_unstemmed Effect of scandium on the structural and photocatalytic properties of titanium dioxide thin films
title_sort Effect of scandium on the structural and photocatalytic properties of titanium dioxide thin films
author Cavalheiro, A. A. [UNESP]
author_facet Cavalheiro, A. A. [UNESP]
Bruno, J. C. [UNESP]
Saeki, M. J. [UNESP]
Valente, J. P S [UNESP]
Florentino, A. O. [UNESP]
author_role author
author2 Bruno, J. C. [UNESP]
Saeki, M. J. [UNESP]
Valente, J. P S [UNESP]
Florentino, A. O. [UNESP]
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Cavalheiro, A. A. [UNESP]
Bruno, J. C. [UNESP]
Saeki, M. J. [UNESP]
Valente, J. P S [UNESP]
Florentino, A. O. [UNESP]
dc.subject.por.fl_str_mv Doping (additives)
Molecular structure
Oxide films
Photocatalysis
Rietveld method
Titanium compounds
Crystallinity
Photoactivity
Structural parameters
Thin films
topic Doping (additives)
Molecular structure
Oxide films
Photocatalysis
Rietveld method
Titanium compounds
Crystallinity
Photoactivity
Structural parameters
Thin films
description Pure and scandium doped-TiO2 thin films were prepared by the sol-gel process and coated by dip coating. The effects of scandium on the phase formation, optical properties and photoactivity of the TiO2 thin films were investigated. The lattice parameters and the crystallinity of the anatase phase, characterized by the Rietveld method, demonstrated that scandium doping affected the structural parameters and crystallinity of the films, modifying the absorption edge. A direct correlation was found between band gap energy and photodegradation efficiency, with lower values of band gap energy augmenting this efficiency. Moreover, a significant improvement in the catalyst's photodegradation efficiency was attained with a scandium concentration of 5.0 mol%. © 2007 Springer Science+Business Media, LLC.
publishDate 2008
dc.date.none.fl_str_mv 2008-01-01
2014-05-27T11:22:46Z
2014-05-27T11:22:46Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/conferenceObject
format conferenceObject
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1007/s10853-007-1743-2
Journal of Materials Science, v. 43, n. 2, p. 602-608, 2008.
0022-2461
1573-4803
http://hdl.handle.net/11449/70237
10.1007/s10853-007-1743-2
2-s2.0-37249068576
1802982806436894
url http://dx.doi.org/10.1007/s10853-007-1743-2
http://hdl.handle.net/11449/70237
identifier_str_mv Journal of Materials Science, v. 43, n. 2, p. 602-608, 2008.
0022-2461
1573-4803
10.1007/s10853-007-1743-2
2-s2.0-37249068576
1802982806436894
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal of Materials Science
2.993
0,807
0,807
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 602-608
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1808128965906268160

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