Optical properties of in situ doped and undoped titania nanocatalysts and doped titania sol–gel nanofilms

Detalhes bibliográficos
Autor(a) principal: Silva, A. Ferreira da
Data de Publicação: 2006
Outros Autores: Pepe, Iuri Muniz, Gole, James L., Tomás, S. A., Palomino, R., Azevedo, W. M. de, Silva Junior, E. F. da, Ahuja, Rajeev, Persson, C.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/6521
Resumo: RESTRITO
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spelling Silva, A. Ferreira daPepe, Iuri MunizGole, James L.Tomás, S. A.Palomino, R.Azevedo, W. M. deSilva Junior, E. F. daAhuja, RajeevPersson, C.Silva, A. Ferreira daPepe, Iuri MunizGole, James L.Tomás, S. A.Palomino, R.Azevedo, W. M. deSilva Junior, E. F. daAhuja, RajeevPersson, C.2012-07-31T19:29:25Z2012-07-31T19:29:25Z20060169-4332http://www.repositorio.ufba.br/ri/handle/ri/6521v.252, n.15RESTRITOIn this paper we present spectroscopic properties of doped and undoped titanium dioxide (TiO2) as nanofilms prepared by the sol–gel process with rhodamine 6G doping and studied by photoacoustic absorption, excitation and emission spectroscopy. The absorption spectra of TiO2 thin films doped with rhodamine 6G at very low concentration during their preparation show two absorption bands, one at 2.3 eV attributed to molecular dimmer formation, which is responsible for the fluorescence quenching of the sample and the other at 3.0 eV attributed to TiO2 absorption, which subsequently yields a strong emission band at 600 nm. The electronic band structure and optical properties of the rutile phase of TiO2 are calculated employing a fully relativistic, full-potential, linearized, augmented plane-wave (FPLAPW) method within the local density approximation (LDA). Comparison of this calculation with experimental data for TiO2 films prepared for undoped sol–gels and by sputtering is performed. 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dc.title.pt_BR.fl_str_mv Optical properties of in situ doped and undoped titania nanocatalysts and doped titania sol–gel nanofilms
dc.title.alternative.pt_BR.fl_str_mv Applied Surface Science
title Optical properties of in situ doped and undoped titania nanocatalysts and doped titania sol–gel nanofilms
spellingShingle Optical properties of in situ doped and undoped titania nanocatalysts and doped titania sol–gel nanofilms
Silva, A. Ferreira da
Polymer
TiO2 nanofilms
Electronic band structure
Rhodamine 6G doping
title_short Optical properties of in situ doped and undoped titania nanocatalysts and doped titania sol–gel nanofilms
title_full Optical properties of in situ doped and undoped titania nanocatalysts and doped titania sol–gel nanofilms
title_fullStr Optical properties of in situ doped and undoped titania nanocatalysts and doped titania sol–gel nanofilms
title_full_unstemmed Optical properties of in situ doped and undoped titania nanocatalysts and doped titania sol–gel nanofilms
title_sort Optical properties of in situ doped and undoped titania nanocatalysts and doped titania sol–gel nanofilms
author Silva, A. Ferreira da
author_facet Silva, A. Ferreira da
Pepe, Iuri Muniz
Gole, James L.
Tomás, S. A.
Palomino, R.
Azevedo, W. M. de
Silva Junior, E. F. da
Ahuja, Rajeev
Persson, C.
author_role author
author2 Pepe, Iuri Muniz
Gole, James L.
Tomás, S. A.
Palomino, R.
Azevedo, W. M. de
Silva Junior, E. F. da
Ahuja, Rajeev
Persson, C.
author2_role author
author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Silva, A. Ferreira da
Pepe, Iuri Muniz
Gole, James L.
Tomás, S. A.
Palomino, R.
Azevedo, W. M. de
Silva Junior, E. F. da
Ahuja, Rajeev
Persson, C.
Silva, A. Ferreira da
Pepe, Iuri Muniz
Gole, James L.
Tomás, S. A.
Palomino, R.
Azevedo, W. M. de
Silva Junior, E. F. da
Ahuja, Rajeev
Persson, C.
dc.subject.por.fl_str_mv Polymer
TiO2 nanofilms
Electronic band structure
Rhodamine 6G doping
topic Polymer
TiO2 nanofilms
Electronic band structure
Rhodamine 6G doping
description RESTRITO
publishDate 2006
dc.date.issued.fl_str_mv 2006
dc.date.accessioned.fl_str_mv 2012-07-31T19:29:25Z
dc.date.available.fl_str_mv 2012-07-31T19:29:25Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.repositorio.ufba.br/ri/handle/ri/6521
dc.identifier.issn.none.fl_str_mv 0169-4332
dc.identifier.number.pt_BR.fl_str_mv v.252, n.15
identifier_str_mv 0169-4332
v.252, n.15
url http://www.repositorio.ufba.br/ri/handle/ri/6521
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Applied Surface Science
publisher.none.fl_str_mv Applied Surface Science
dc.source.pt_BR.fl_str_mv http://dx.doi.org/10.1016/j.apsusc.2005.12.041
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
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instname_str Universidade Federal da Bahia (UFBA)
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reponame_str Repositório Institucional da UFBA
collection Repositório Institucional da UFBA
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