Assessment of hydrothermal parameters in the wet synthesis of α- and β-BiTaO4 by in situ synchrotron X-ray diffraction

Detalhes bibliográficos
Autor(a) principal: de Sousa Maia, Djalma Lucas
Data de Publicação: 2022
Outros Autores: Dias, Diego Felix [UNESP], Lopes, Paula Aparecida Lima, dos Santos Trindade, Tuany Nascimento, Szostak, Rodrigo, Silva, Luciana Almeida, Soares, Márcio Medeiros
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.mtcomm.2022.103591
http://hdl.handle.net/11449/241653
Resumo: Synchrotron X-ray diffraction was used for in situ monitoring of hydrothermal precursors calcination to obtain BiTaO4 in the orthorhombic (α) and triclinic (β) crystal phases. Different precursors were prepared varying time (24 and 48 h) and temperature (150 and 200 °C) of hydrothermal treatment. According to the results of in situ X-ray analysis during calcination of the precursors, the α- and β-BiTaO4 phases were achieved from the hydrothermal precursors treated at 200 °C. When the hydrothermal treatment time was carried out for 24 h, a precursor with Bi1−xTaxO1.5−x (fluorite structure, like δ-Bi2O3) and BiOCl phases was obtained, which evolved to Bi24Cl10O31 phase with heating. The presence of the chlorine-containing phases and the low crystallinity of the hydrothermal precursor contributed to the formation of β-BiTaO4. When the precursor is obtained with 48 h of hydrothermal treatment, only the Bi1−xTaxO1.5−x crystalline phase was identified and when heated it evolved to α-BiTaO4 phase at 550 °C. This is the first time that the pure orthorhombic phase is obtained from a wet synthesis method. All identified phases were confirmed by Rietveld refinement.
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spelling Assessment of hydrothermal parameters in the wet synthesis of α- and β-BiTaO4 by in situ synchrotron X-ray diffractionBismuth tantalateCeramic materialsHydrothermal synthesisSynchrotron lightX-ray diffractionSynchrotron X-ray diffraction was used for in situ monitoring of hydrothermal precursors calcination to obtain BiTaO4 in the orthorhombic (α) and triclinic (β) crystal phases. Different precursors were prepared varying time (24 and 48 h) and temperature (150 and 200 °C) of hydrothermal treatment. According to the results of in situ X-ray analysis during calcination of the precursors, the α- and β-BiTaO4 phases were achieved from the hydrothermal precursors treated at 200 °C. When the hydrothermal treatment time was carried out for 24 h, a precursor with Bi1−xTaxO1.5−x (fluorite structure, like δ-Bi2O3) and BiOCl phases was obtained, which evolved to Bi24Cl10O31 phase with heating. The presence of the chlorine-containing phases and the low crystallinity of the hydrothermal precursor contributed to the formation of β-BiTaO4. When the precursor is obtained with 48 h of hydrothermal treatment, only the Bi1−xTaxO1.5−x crystalline phase was identified and when heated it evolved to α-BiTaO4 phase at 550 °C. This is the first time that the pure orthorhombic phase is obtained from a wet synthesis method. All identified phases were confirmed by Rietveld refinement.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado da BahiaLaboratório de Química do Estado Sólido (LQES) Instituto de Química Universidade Estadual de Campinas, São PauloInstituto de Geociências e Ciências Exatas Universidade Estadual Paulista Júlio de Mesquita Filho, Av. Vinte e Quatro A, 1515, Bela Vista, São PauloLaboratório Nacional de Luz Síncrotron (LNLS) Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), São PauloInstituto de Química Departamento de Química Geral e Inorgânica Universidade Federal da Bahia, Trav. Barão de Jeremoabo, 147, Ondina-Federação, BahiaLaboratório de Nanotecnologia e Energia Solar Instituto de Química Universidade Estadual de Campinas, São PauloInstituto Nacional de Ciência e Tecnologia INCT de Energia e Ambiente Universidade Federal da Bahia, BahiaDepartamento de Física Universidade Federal da ParaíbaInstituto de Geociências e Ciências Exatas Universidade Estadual Paulista Júlio de Mesquita Filho, Av. Vinte e Quatro A, 1515, Bela Vista, São PauloCAPES: 001Fundação de Amparo à Pesquisa do Estado da Bahia: APP0050/2016Universidade Estadual de Campinas (UNICAMP)Universidade Estadual Paulista (UNESP)Centro Nacional de Pesquisa em Energia e Materiais (CNPEM)Universidade Federal da Bahia (UFBA)Universidade Federal da Paraíba (UFPB)de Sousa Maia, Djalma LucasDias, Diego Felix [UNESP]Lopes, Paula Aparecida Limados Santos Trindade, Tuany NascimentoSzostak, RodrigoSilva, Luciana AlmeidaSoares, Márcio Medeiros2023-03-01T21:14:58Z2023-03-01T21:14:58Z2022-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.mtcomm.2022.103591Materials Today Communications, v. 31.2352-4928http://hdl.handle.net/11449/24165310.1016/j.mtcomm.2022.1035912-s2.0-85129657455Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterials Today Communicationsinfo:eu-repo/semantics/openAccess2023-03-01T21:14:58Zoai:repositorio.unesp.br:11449/241653Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:05:02.847593Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Assessment of hydrothermal parameters in the wet synthesis of α- and β-BiTaO4 by in situ synchrotron X-ray diffraction
title Assessment of hydrothermal parameters in the wet synthesis of α- and β-BiTaO4 by in situ synchrotron X-ray diffraction
spellingShingle Assessment of hydrothermal parameters in the wet synthesis of α- and β-BiTaO4 by in situ synchrotron X-ray diffraction
de Sousa Maia, Djalma Lucas
Bismuth tantalate
Ceramic materials
Hydrothermal synthesis
Synchrotron light
X-ray diffraction
title_short Assessment of hydrothermal parameters in the wet synthesis of α- and β-BiTaO4 by in situ synchrotron X-ray diffraction
title_full Assessment of hydrothermal parameters in the wet synthesis of α- and β-BiTaO4 by in situ synchrotron X-ray diffraction
title_fullStr Assessment of hydrothermal parameters in the wet synthesis of α- and β-BiTaO4 by in situ synchrotron X-ray diffraction
title_full_unstemmed Assessment of hydrothermal parameters in the wet synthesis of α- and β-BiTaO4 by in situ synchrotron X-ray diffraction
title_sort Assessment of hydrothermal parameters in the wet synthesis of α- and β-BiTaO4 by in situ synchrotron X-ray diffraction
author de Sousa Maia, Djalma Lucas
author_facet de Sousa Maia, Djalma Lucas
Dias, Diego Felix [UNESP]
Lopes, Paula Aparecida Lima
dos Santos Trindade, Tuany Nascimento
Szostak, Rodrigo
Silva, Luciana Almeida
Soares, Márcio Medeiros
author_role author
author2 Dias, Diego Felix [UNESP]
Lopes, Paula Aparecida Lima
dos Santos Trindade, Tuany Nascimento
Szostak, Rodrigo
Silva, Luciana Almeida
Soares, Márcio Medeiros
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual de Campinas (UNICAMP)
Universidade Estadual Paulista (UNESP)
Centro Nacional de Pesquisa em Energia e Materiais (CNPEM)
Universidade Federal da Bahia (UFBA)
Universidade Federal da Paraíba (UFPB)
dc.contributor.author.fl_str_mv de Sousa Maia, Djalma Lucas
Dias, Diego Felix [UNESP]
Lopes, Paula Aparecida Lima
dos Santos Trindade, Tuany Nascimento
Szostak, Rodrigo
Silva, Luciana Almeida
Soares, Márcio Medeiros
dc.subject.por.fl_str_mv Bismuth tantalate
Ceramic materials
Hydrothermal synthesis
Synchrotron light
X-ray diffraction
topic Bismuth tantalate
Ceramic materials
Hydrothermal synthesis
Synchrotron light
X-ray diffraction
description Synchrotron X-ray diffraction was used for in situ monitoring of hydrothermal precursors calcination to obtain BiTaO4 in the orthorhombic (α) and triclinic (β) crystal phases. Different precursors were prepared varying time (24 and 48 h) and temperature (150 and 200 °C) of hydrothermal treatment. According to the results of in situ X-ray analysis during calcination of the precursors, the α- and β-BiTaO4 phases were achieved from the hydrothermal precursors treated at 200 °C. When the hydrothermal treatment time was carried out for 24 h, a precursor with Bi1−xTaxO1.5−x (fluorite structure, like δ-Bi2O3) and BiOCl phases was obtained, which evolved to Bi24Cl10O31 phase with heating. The presence of the chlorine-containing phases and the low crystallinity of the hydrothermal precursor contributed to the formation of β-BiTaO4. When the precursor is obtained with 48 h of hydrothermal treatment, only the Bi1−xTaxO1.5−x crystalline phase was identified and when heated it evolved to α-BiTaO4 phase at 550 °C. This is the first time that the pure orthorhombic phase is obtained from a wet synthesis method. All identified phases were confirmed by Rietveld refinement.
publishDate 2022
dc.date.none.fl_str_mv 2022-06-01
2023-03-01T21:14:58Z
2023-03-01T21:14:58Z
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://dx.doi.org/10.1016/j.mtcomm.2022.103591
Materials Today Communications, v. 31.
2352-4928
http://hdl.handle.net/11449/241653
10.1016/j.mtcomm.2022.103591
2-s2.0-85129657455
url http://dx.doi.org/10.1016/j.mtcomm.2022.103591
http://hdl.handle.net/11449/241653
identifier_str_mv Materials Today Communications, v. 31.
2352-4928
10.1016/j.mtcomm.2022.103591
2-s2.0-85129657455
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Materials Today Communications
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
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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