Study of the zirconium and silicon homovalent dopants insertion on the structure and bandgap energy of titanium dioxide powders

Detalhes bibliográficos
Autor(a) principal: Garcia, Hiana Muniz
Data de Publicação: 2018
Outros Autores: Carli, Eduardo Felipe De, Cruz, Natali Amarante da, Stropa, Jusinei Meireles [UNESP], Favarin, Lis Regiane Vizolli [UNESP], Junior, Amilcar Muchulek [UNESP], de Oliveira, Lincoln Carlos Silva [UNESP], Cavalheiro, Alberto Adriano
Tipo de documento: Artigo de conferência
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.4028/www.scientific.net/MSF.930.67
http://hdl.handle.net/11449/186974
Resumo: The reconstructive transformation occurring during the anatase-to-rutile phase transition can be observed through adequate techniques such as Thermal Analyses and Z-ray diffractometry followed by structural refinement. The typical photonic properties of titanium dioxide photocatalysts depend on the anatase structure and how the modifiers can provide their performance enhancement. In the present work, we investigate the structural effects caused by the simultaneous homovalent modification on the anatase structure in order to understand the mechanisms of the anatase-to-rutile phase transition in terms of the atomic coordinates and the lattice parameters. The refined structures along the calcination temperature from 500 to 900 ºC suggest the oxygen bonds are strongly affected in unmodified anatase in order to destroy and rebuilt the crystal structure and lead to the rutile phase formation above 700 ºC, unless some modifier pairs stabilize them.
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spelling Study of the zirconium and silicon homovalent dopants insertion on the structure and bandgap energy of titanium dioxide powdersRietveldSol-GelThermal AnalysisTitanium Dioxide AnataseThe reconstructive transformation occurring during the anatase-to-rutile phase transition can be observed through adequate techniques such as Thermal Analyses and Z-ray diffractometry followed by structural refinement. The typical photonic properties of titanium dioxide photocatalysts depend on the anatase structure and how the modifiers can provide their performance enhancement. In the present work, we investigate the structural effects caused by the simultaneous homovalent modification on the anatase structure in order to understand the mechanisms of the anatase-to-rutile phase transition in terms of the atomic coordinates and the lattice parameters. The refined structures along the calcination temperature from 500 to 900 ºC suggest the oxygen bonds are strongly affected in unmodified anatase in order to destroy and rebuilt the crystal structure and lead to the rutile phase formation above 700 ºC, unless some modifier pairs stabilize them.CDTEQ – UEMS, Rua Emílio Mascoli 275 CentroLIEC – UNESP, Rua Francisco Degni 55 QuitandinhaLIEC – UNESP, Rua Francisco Degni 55 QuitandinhaUniversidade Estadual de Mato Grosso do Sul (UEMS)Universidade Estadual Paulista (Unesp)Garcia, Hiana MunizCarli, Eduardo Felipe DeCruz, Natali Amarante daStropa, Jusinei Meireles [UNESP]Favarin, Lis Regiane Vizolli [UNESP]Junior, Amilcar Muchulek [UNESP]de Oliveira, Lincoln Carlos Silva [UNESP]Cavalheiro, Alberto Adriano2019-10-06T15:21:39Z2019-10-06T15:21:39Z2018-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject67-72http://dx.doi.org/10.4028/www.scientific.net/MSF.930.67Materials Science Forum, v. 930 MSF, p. 67-72.0255-5476http://hdl.handle.net/11449/18697410.4028/www.scientific.net/MSF.930.672-s2.0-85055096438Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterials Science Foruminfo:eu-repo/semantics/openAccess2021-10-23T19:02:02Zoai:repositorio.unesp.br:11449/186974Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T13:39:44.888147Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Study of the zirconium and silicon homovalent dopants insertion on the structure and bandgap energy of titanium dioxide powders
title Study of the zirconium and silicon homovalent dopants insertion on the structure and bandgap energy of titanium dioxide powders
spellingShingle Study of the zirconium and silicon homovalent dopants insertion on the structure and bandgap energy of titanium dioxide powders
Garcia, Hiana Muniz
Rietveld
Sol-Gel
Thermal Analysis
Titanium Dioxide Anatase
title_short Study of the zirconium and silicon homovalent dopants insertion on the structure and bandgap energy of titanium dioxide powders
title_full Study of the zirconium and silicon homovalent dopants insertion on the structure and bandgap energy of titanium dioxide powders
title_fullStr Study of the zirconium and silicon homovalent dopants insertion on the structure and bandgap energy of titanium dioxide powders
title_full_unstemmed Study of the zirconium and silicon homovalent dopants insertion on the structure and bandgap energy of titanium dioxide powders
title_sort Study of the zirconium and silicon homovalent dopants insertion on the structure and bandgap energy of titanium dioxide powders
author Garcia, Hiana Muniz
author_facet Garcia, Hiana Muniz
Carli, Eduardo Felipe De
Cruz, Natali Amarante da
Stropa, Jusinei Meireles [UNESP]
Favarin, Lis Regiane Vizolli [UNESP]
Junior, Amilcar Muchulek [UNESP]
de Oliveira, Lincoln Carlos Silva [UNESP]
Cavalheiro, Alberto Adriano
author_role author
author2 Carli, Eduardo Felipe De
Cruz, Natali Amarante da
Stropa, Jusinei Meireles [UNESP]
Favarin, Lis Regiane Vizolli [UNESP]
Junior, Amilcar Muchulek [UNESP]
de Oliveira, Lincoln Carlos Silva [UNESP]
Cavalheiro, Alberto Adriano
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual de Mato Grosso do Sul (UEMS)
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Garcia, Hiana Muniz
Carli, Eduardo Felipe De
Cruz, Natali Amarante da
Stropa, Jusinei Meireles [UNESP]
Favarin, Lis Regiane Vizolli [UNESP]
Junior, Amilcar Muchulek [UNESP]
de Oliveira, Lincoln Carlos Silva [UNESP]
Cavalheiro, Alberto Adriano
dc.subject.por.fl_str_mv Rietveld
Sol-Gel
Thermal Analysis
Titanium Dioxide Anatase
topic Rietveld
Sol-Gel
Thermal Analysis
Titanium Dioxide Anatase
description The reconstructive transformation occurring during the anatase-to-rutile phase transition can be observed through adequate techniques such as Thermal Analyses and Z-ray diffractometry followed by structural refinement. The typical photonic properties of titanium dioxide photocatalysts depend on the anatase structure and how the modifiers can provide their performance enhancement. In the present work, we investigate the structural effects caused by the simultaneous homovalent modification on the anatase structure in order to understand the mechanisms of the anatase-to-rutile phase transition in terms of the atomic coordinates and the lattice parameters. The refined structures along the calcination temperature from 500 to 900 ºC suggest the oxygen bonds are strongly affected in unmodified anatase in order to destroy and rebuilt the crystal structure and lead to the rutile phase formation above 700 ºC, unless some modifier pairs stabilize them.
publishDate 2018
dc.date.none.fl_str_mv 2018-01-01
2019-10-06T15:21:39Z
2019-10-06T15:21:39Z
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/10.4028/www.scientific.net/MSF.930.67
Materials Science Forum, v. 930 MSF, p. 67-72.
0255-5476
http://hdl.handle.net/11449/186974
10.4028/www.scientific.net/MSF.930.67
2-s2.0-85055096438
url http://dx.doi.org/10.4028/www.scientific.net/MSF.930.67
http://hdl.handle.net/11449/186974
identifier_str_mv Materials Science Forum, v. 930 MSF, p. 67-72.
0255-5476
10.4028/www.scientific.net/MSF.930.67
2-s2.0-85055096438
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Materials Science Forum
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 67-72
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
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