Synthesis and characterization of nanostructured TiO2-SnO2 composite

Detalhes bibliográficos
Autor(a) principal: Breve, Joelma Cristina de Souza [UNESP]
Data de Publicação: 2014
Outros Autores: Santos, Dayse Iara dos [UNESP]
Tipo de documento: Artigo de conferência
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://www.scientific.net/AMR.975.233
http://hdl.handle.net/11449/130181
Resumo: Nanostructured composites based on titanium dioxide have been studied in order to improve optical and photo-catalytic properties, as well as their performance in gas sensors. In this work, titanium and tin dioxides were simultaneously synthesized by the polyol method resulting in TiO2 platelet coated with SnO2 nanoparticles as was observed by scanning electron microscopy. The thermal analysis showed that the combined synthesis promotes more easily the crystallization of the TiO2 rutile phase. The composite obtained after heat treatment at 500 degrees C showed to be formed of almost only rutile phases of both oxides. The optical properties analyzed by UV-Vis spectroscopy showed that the combined oxides have higher absorbance, which reinforces a model found in the literature based on the flow of photo-generated electrons to the conduction band of SnO2 delaying the recombination of charges.
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spelling Synthesis and characterization of nanostructured TiO2-SnO2 compositeSemiconductors nanocompositePolyol methodTitanium dioxideTin dioxideNanostructured materialsTiO2-SnO2 compositeNanostructured composites based on titanium dioxide have been studied in order to improve optical and photo-catalytic properties, as well as their performance in gas sensors. In this work, titanium and tin dioxides were simultaneously synthesized by the polyol method resulting in TiO2 platelet coated with SnO2 nanoparticles as was observed by scanning electron microscopy. The thermal analysis showed that the combined synthesis promotes more easily the crystallization of the TiO2 rutile phase. The composite obtained after heat treatment at 500 degrees C showed to be formed of almost only rutile phases of both oxides. The optical properties analyzed by UV-Vis spectroscopy showed that the combined oxides have higher absorbance, which reinforces a model found in the literature based on the flow of photo-generated electrons to the conduction band of SnO2 delaying the recombination of charges.Universidade Estadual Paulista, Departamento de Física, Faculdade de Ciências de BauruTrans Tech Publications LtdUniversidade Estadual Paulista (Unesp)Breve, Joelma Cristina de Souza [UNESP]Santos, Dayse Iara dos [UNESP]2015-11-03T15:29:59Z2015-11-03T15:29:59Z2014-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject233-237http://www.scientific.net/AMR.975.233Electroceramics Vi. Stafa-zurich: Trans Tech Publications Ltd, v. 975, p. 233-237, 2014.1022-6680http://hdl.handle.net/11449/13018110.4028/www.scientific.net/AMR.975.233WOS:0003480232000388506867595279427Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengElectroceramics Vi0,121info:eu-repo/semantics/openAccess2024-04-25T17:40:43Zoai:repositorio.unesp.br:11449/130181Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:03:33.518955Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Synthesis and characterization of nanostructured TiO2-SnO2 composite
title Synthesis and characterization of nanostructured TiO2-SnO2 composite
spellingShingle Synthesis and characterization of nanostructured TiO2-SnO2 composite
Breve, Joelma Cristina de Souza [UNESP]
Semiconductors nanocomposite
Polyol method
Titanium dioxide
Tin dioxide
Nanostructured materials
TiO2-SnO2 composite
title_short Synthesis and characterization of nanostructured TiO2-SnO2 composite
title_full Synthesis and characterization of nanostructured TiO2-SnO2 composite
title_fullStr Synthesis and characterization of nanostructured TiO2-SnO2 composite
title_full_unstemmed Synthesis and characterization of nanostructured TiO2-SnO2 composite
title_sort Synthesis and characterization of nanostructured TiO2-SnO2 composite
author Breve, Joelma Cristina de Souza [UNESP]
author_facet Breve, Joelma Cristina de Souza [UNESP]
Santos, Dayse Iara dos [UNESP]
author_role author
author2 Santos, Dayse Iara dos [UNESP]
author2_role author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Breve, Joelma Cristina de Souza [UNESP]
Santos, Dayse Iara dos [UNESP]
dc.subject.por.fl_str_mv Semiconductors nanocomposite
Polyol method
Titanium dioxide
Tin dioxide
Nanostructured materials
TiO2-SnO2 composite
topic Semiconductors nanocomposite
Polyol method
Titanium dioxide
Tin dioxide
Nanostructured materials
TiO2-SnO2 composite
description Nanostructured composites based on titanium dioxide have been studied in order to improve optical and photo-catalytic properties, as well as their performance in gas sensors. In this work, titanium and tin dioxides were simultaneously synthesized by the polyol method resulting in TiO2 platelet coated with SnO2 nanoparticles as was observed by scanning electron microscopy. The thermal analysis showed that the combined synthesis promotes more easily the crystallization of the TiO2 rutile phase. The composite obtained after heat treatment at 500 degrees C showed to be formed of almost only rutile phases of both oxides. The optical properties analyzed by UV-Vis spectroscopy showed that the combined oxides have higher absorbance, which reinforces a model found in the literature based on the flow of photo-generated electrons to the conduction band of SnO2 delaying the recombination of charges.
publishDate 2014
dc.date.none.fl_str_mv 2014-01-01
2015-11-03T15:29:59Z
2015-11-03T15:29:59Z
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://www.scientific.net/AMR.975.233
Electroceramics Vi. Stafa-zurich: Trans Tech Publications Ltd, v. 975, p. 233-237, 2014.
1022-6680
http://hdl.handle.net/11449/130181
10.4028/www.scientific.net/AMR.975.233
WOS:000348023200038
8506867595279427
url http://www.scientific.net/AMR.975.233
http://hdl.handle.net/11449/130181
identifier_str_mv Electroceramics Vi. Stafa-zurich: Trans Tech Publications Ltd, v. 975, p. 233-237, 2014.
1022-6680
10.4028/www.scientific.net/AMR.975.233
WOS:000348023200038
8506867595279427
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Electroceramics Vi
0,121
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 233-237
dc.publisher.none.fl_str_mv Trans Tech Publications Ltd
publisher.none.fl_str_mv Trans Tech Publications Ltd
dc.source.none.fl_str_mv Web of Science
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
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