Effect of iron and vanadium on the phase transition of titanium dioxide obtained by polymeric precursor method
Autor(a) principal: | |
---|---|
Data de Publicação: | 2017 |
Outros Autores: | , , , , , , |
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.881.18 http://hdl.handle.net/11449/169370 |
Resumo: | The titanium dioxide phase formation is dependent on the synthesis method, temperature of calcination and modifiers insertion. By using chemical methods, such as Polymeric Precursor Method, the organic impurities or extrinsic defects caused by doping play an important rule on the formation of precursor structure before the phase crystallization above 500 ºC. Some dopants can change the decomposition mechanism of the precursor, which affects the anatase-rutile phase transition. In this work, the Polymeric Precursor Method was used to synthesize titanium dioxide powder samples in order to investigate the effects of iron (III) and vanadium (V) dopants on the phase formation. Through thermal analysis of polymeric precursors and X-ray diffractometry for calcined powder samples it was possible to show the existence of antagonistic effects for both investigated dopants. While the iron doping reduces the anatase phase tetragonality and delays the rutile phase conversion, the vanadium one changes the mechanism of decomposition of polymeric precursor and leads to more amount of rutile phase. |
id |
UNSP_722b79d6891cd9231d94bd24a3eab4ec |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/169370 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Effect of iron and vanadium on the phase transition of titanium dioxide obtained by polymeric precursor methodAnatasePhotocatalystRietveldRutileTitanium dioxideThe titanium dioxide phase formation is dependent on the synthesis method, temperature of calcination and modifiers insertion. By using chemical methods, such as Polymeric Precursor Method, the organic impurities or extrinsic defects caused by doping play an important rule on the formation of precursor structure before the phase crystallization above 500 ºC. Some dopants can change the decomposition mechanism of the precursor, which affects the anatase-rutile phase transition. In this work, the Polymeric Precursor Method was used to synthesize titanium dioxide powder samples in order to investigate the effects of iron (III) and vanadium (V) dopants on the phase formation. Through thermal analysis of polymeric precursors and X-ray diffractometry for calcined powder samples it was possible to show the existence of antagonistic effects for both investigated dopants. While the iron doping reduces the anatase phase tetragonality and delays the rutile phase conversion, the vanadium one changes the mechanism of decomposition of polymeric precursor and leads to more amount of rutile phase.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundaçêo de Apoio ao Desenvolvimento do Ensino, Ciçncia e Tecnologia do Estado de Mato Grosso do SulCPTREN - UEMS, Rua Emilio Mascoli, 275 - Centro.LIEC UNESP, Rua Francisco Degni, s/n. POBox 549InQui UFMS Cidade Universitária, POBox 549LIEC UNESP, Rua Francisco Degni, s/n. POBox 549Universidade Estadual de Mato Grosso do Sul (UEMS)Universidade Estadual Paulista (Unesp)Universidade Federal de Mato Grosso do Sul (UFMS)De Carli, Eduardo Felipedos Santos, Mayconda Cruz, Natali AmaranteManfroi, Daniela Cristina [UNESP]Stropa, Jusinei Meirelesde Oliveira, Lincoln Carlos SilvaZaghete, Maria Aparecida [UNESP]Cavalheiro, Alberto Adriano2018-12-11T16:45:34Z2018-12-11T16:45:34Z2017-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject18-23http://dx.doi.org/10.4028/www.scientific.net/MSF.881.18Materials Science Forum, v. 881 MSF, p. 18-23.0255-5476http://hdl.handle.net/11449/16937010.4028/www.scientific.net/MSF.881.182-s2.0-85009829602Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterials Science Forum0,180info:eu-repo/semantics/openAccess2021-10-23T16:16:09Zoai:repositorio.unesp.br:11449/169370Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:01:30.480912Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Effect of iron and vanadium on the phase transition of titanium dioxide obtained by polymeric precursor method |
title |
Effect of iron and vanadium on the phase transition of titanium dioxide obtained by polymeric precursor method |
spellingShingle |
Effect of iron and vanadium on the phase transition of titanium dioxide obtained by polymeric precursor method De Carli, Eduardo Felipe Anatase Photocatalyst Rietveld Rutile Titanium dioxide |
title_short |
Effect of iron and vanadium on the phase transition of titanium dioxide obtained by polymeric precursor method |
title_full |
Effect of iron and vanadium on the phase transition of titanium dioxide obtained by polymeric precursor method |
title_fullStr |
Effect of iron and vanadium on the phase transition of titanium dioxide obtained by polymeric precursor method |
title_full_unstemmed |
Effect of iron and vanadium on the phase transition of titanium dioxide obtained by polymeric precursor method |
title_sort |
Effect of iron and vanadium on the phase transition of titanium dioxide obtained by polymeric precursor method |
author |
De Carli, Eduardo Felipe |
author_facet |
De Carli, Eduardo Felipe dos Santos, Maycon da Cruz, Natali Amarante Manfroi, Daniela Cristina [UNESP] Stropa, Jusinei Meireles de Oliveira, Lincoln Carlos Silva Zaghete, Maria Aparecida [UNESP] Cavalheiro, Alberto Adriano |
author_role |
author |
author2 |
dos Santos, Maycon da Cruz, Natali Amarante Manfroi, Daniela Cristina [UNESP] Stropa, Jusinei Meireles de Oliveira, Lincoln Carlos Silva Zaghete, Maria Aparecida [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) Universidade Federal de Mato Grosso do Sul (UFMS) |
dc.contributor.author.fl_str_mv |
De Carli, Eduardo Felipe dos Santos, Maycon da Cruz, Natali Amarante Manfroi, Daniela Cristina [UNESP] Stropa, Jusinei Meireles de Oliveira, Lincoln Carlos Silva Zaghete, Maria Aparecida [UNESP] Cavalheiro, Alberto Adriano |
dc.subject.por.fl_str_mv |
Anatase Photocatalyst Rietveld Rutile Titanium dioxide |
topic |
Anatase Photocatalyst Rietveld Rutile Titanium dioxide |
description |
The titanium dioxide phase formation is dependent on the synthesis method, temperature of calcination and modifiers insertion. By using chemical methods, such as Polymeric Precursor Method, the organic impurities or extrinsic defects caused by doping play an important rule on the formation of precursor structure before the phase crystallization above 500 ºC. Some dopants can change the decomposition mechanism of the precursor, which affects the anatase-rutile phase transition. In this work, the Polymeric Precursor Method was used to synthesize titanium dioxide powder samples in order to investigate the effects of iron (III) and vanadium (V) dopants on the phase formation. Through thermal analysis of polymeric precursors and X-ray diffractometry for calcined powder samples it was possible to show the existence of antagonistic effects for both investigated dopants. While the iron doping reduces the anatase phase tetragonality and delays the rutile phase conversion, the vanadium one changes the mechanism of decomposition of polymeric precursor and leads to more amount of rutile phase. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-01-01 2018-12-11T16:45:34Z 2018-12-11T16:45:34Z |
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.881.18 Materials Science Forum, v. 881 MSF, p. 18-23. 0255-5476 http://hdl.handle.net/11449/169370 10.4028/www.scientific.net/MSF.881.18 2-s2.0-85009829602 |
url |
http://dx.doi.org/10.4028/www.scientific.net/MSF.881.18 http://hdl.handle.net/11449/169370 |
identifier_str_mv |
Materials Science Forum, v. 881 MSF, p. 18-23. 0255-5476 10.4028/www.scientific.net/MSF.881.18 2-s2.0-85009829602 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Materials Science Forum 0,180 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
18-23 |
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_ |
1808128305988108288 |