Synthesis and characterization of nanostructured TiO2-SnO2 composite
Autor(a) principal: | |
---|---|
Data de Publicação: | 2014 |
Outros Autores: | |
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. |
id |
UNSP_59c9c086c7411d56fafbf511887b75f4 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/130181 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
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 |
|
_version_ |
1808128747735351296 |