Assessment of hydrothermal parameters in the wet synthesis of α- and β-BiTaO4 by in situ synchrotron X-ray diffraction
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , |
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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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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1808129158349324288 |