Morphological mapping of high-pressure solvothermal synthesis of BaTiO3 particles

Detalhes bibliográficos
Autor(a) principal: Martinelli, Antonio Eduardo
Data de Publicação: 2019
Outros Autores: Mendes, Armando M.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRN
Texto Completo: https://repositorio.ufrn.br/handle/123456789/31585
Resumo: In this paper BaTiO3 particles were synthesized by an additive-free solvothermal technique. Different combinations of temperature, holding time and, especially, pressure by gas injection were studied to evaluate the effect of the synthesis parameters on particle morphology. Powders were obtained by using titanium(IV) isopropoxide, barium nitrate and potassium hydroxide as reactants and water/ethanol as solvent. The results showed that from 80 C to 180 C and 6 h to 24 h at inherent pressure, amorphous rough spheres, assembled nanocubes and irregular particles were formed. Dendritic and flower-like particles were synthesized at high pressures (20–80 bar). Oriented agglomeration and Ostwald ripening were the main crystal growth mechanisms observed
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spelling Martinelli, Antonio EduardoMendes, Armando M.2021-02-22T13:39:59Z2021-02-22T13:39:59Z2019-12MENDES, Armando M.; MARTINELLI, Antonio E.. Morphological mapping of high-pressure solvothermal synthesis of BaTiO3 particles. Materials Letters, [S.L.], v. 256, p. 126597-126597, dez. 2019. Elsevier BV. http://dx.doi.org/10.1016/j.matlet.2019.126597. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0167577X19312212?via%3Dihub. Acesso em: 05 jan. 2021.0167-577Xhttps://repositorio.ufrn.br/handle/123456789/3158510.1016/j.matlet.2019.126597ElsevierAttribution 3.0 Brazilhttp://creativecommons.org/licenses/by/3.0/br/info:eu-repo/semantics/openAccessSolvothermal synthesisHigh pressureParticle morphologyBaTiO3Morphological mapping of high-pressure solvothermal synthesis of BaTiO3 particlesinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleIn this paper BaTiO3 particles were synthesized by an additive-free solvothermal technique. Different combinations of temperature, holding time and, especially, pressure by gas injection were studied to evaluate the effect of the synthesis parameters on particle morphology. Powders were obtained by using titanium(IV) isopropoxide, barium nitrate and potassium hydroxide as reactants and water/ethanol as solvent. The results showed that from 80 C to 180 C and 6 h to 24 h at inherent pressure, amorphous rough spheres, assembled nanocubes and irregular particles were formed. Dendritic and flower-like particles were synthesized at high pressures (20–80 bar). Oriented agglomeration and Ostwald ripening were the main crystal growth mechanisms observedengreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNORIGINALMorphologicalMapping_MARTINELI_2019.pdfMorphologicalMapping_MARTINELI_2019.pdfapplication/pdf2496924https://repositorio.ufrn.br/bitstream/123456789/31585/1/MorphologicalMapping_MARTINELI_2019.pdf53fc359620df4cbd25b06b29d97787d3MD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8914https://repositorio.ufrn.br/bitstream/123456789/31585/2/license_rdf4d2950bda3d176f570a9f8b328dfbbefMD52LICENSElicense.txtlicense.txttext/plain; charset=utf-81484https://repositorio.ufrn.br/bitstream/123456789/31585/3/license.txte9597aa2854d128fd968be5edc8a28d9MD53TEXTMorphologicalMapping_MARTINELI_2019.pdf.txtMorphologicalMapping_MARTINELI_2019.pdf.txtExtracted texttext/plain13977https://repositorio.ufrn.br/bitstream/123456789/31585/4/MorphologicalMapping_MARTINELI_2019.pdf.txtfd6146a37ecda951e012f2c918ef5f1bMD54THUMBNAILMorphologicalMapping_MARTINELI_2019.pdf.jpgMorphologicalMapping_MARTINELI_2019.pdf.jpgGenerated Thumbnailimage/jpeg1727https://repositorio.ufrn.br/bitstream/123456789/31585/5/MorphologicalMapping_MARTINELI_2019.pdf.jpg817ad341c1fdab29e7afaed4d878c5bfMD55123456789/315852021-02-28 05:46:16.535oai:https://repositorio.ufrn.br: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Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2021-02-28T08:46:16Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false
dc.title.pt_BR.fl_str_mv Morphological mapping of high-pressure solvothermal synthesis of BaTiO3 particles
title Morphological mapping of high-pressure solvothermal synthesis of BaTiO3 particles
spellingShingle Morphological mapping of high-pressure solvothermal synthesis of BaTiO3 particles
Martinelli, Antonio Eduardo
Solvothermal synthesis
High pressure
Particle morphology
BaTiO3
title_short Morphological mapping of high-pressure solvothermal synthesis of BaTiO3 particles
title_full Morphological mapping of high-pressure solvothermal synthesis of BaTiO3 particles
title_fullStr Morphological mapping of high-pressure solvothermal synthesis of BaTiO3 particles
title_full_unstemmed Morphological mapping of high-pressure solvothermal synthesis of BaTiO3 particles
title_sort Morphological mapping of high-pressure solvothermal synthesis of BaTiO3 particles
author Martinelli, Antonio Eduardo
author_facet Martinelli, Antonio Eduardo
Mendes, Armando M.
author_role author
author2 Mendes, Armando M.
author2_role author
dc.contributor.author.fl_str_mv Martinelli, Antonio Eduardo
Mendes, Armando M.
dc.subject.por.fl_str_mv Solvothermal synthesis
High pressure
Particle morphology
BaTiO3
topic Solvothermal synthesis
High pressure
Particle morphology
BaTiO3
description In this paper BaTiO3 particles were synthesized by an additive-free solvothermal technique. Different combinations of temperature, holding time and, especially, pressure by gas injection were studied to evaluate the effect of the synthesis parameters on particle morphology. Powders were obtained by using titanium(IV) isopropoxide, barium nitrate and potassium hydroxide as reactants and water/ethanol as solvent. The results showed that from 80 C to 180 C and 6 h to 24 h at inherent pressure, amorphous rough spheres, assembled nanocubes and irregular particles were formed. Dendritic and flower-like particles were synthesized at high pressures (20–80 bar). Oriented agglomeration and Ostwald ripening were the main crystal growth mechanisms observed
publishDate 2019
dc.date.issued.fl_str_mv 2019-12
dc.date.accessioned.fl_str_mv 2021-02-22T13:39:59Z
dc.date.available.fl_str_mv 2021-02-22T13:39:59Z
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.citation.fl_str_mv MENDES, Armando M.; MARTINELLI, Antonio E.. Morphological mapping of high-pressure solvothermal synthesis of BaTiO3 particles. Materials Letters, [S.L.], v. 256, p. 126597-126597, dez. 2019. Elsevier BV. http://dx.doi.org/10.1016/j.matlet.2019.126597. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0167577X19312212?via%3Dihub. Acesso em: 05 jan. 2021.
dc.identifier.uri.fl_str_mv https://repositorio.ufrn.br/handle/123456789/31585
dc.identifier.issn.none.fl_str_mv 0167-577X
dc.identifier.doi.none.fl_str_mv 10.1016/j.matlet.2019.126597
identifier_str_mv MENDES, Armando M.; MARTINELLI, Antonio E.. Morphological mapping of high-pressure solvothermal synthesis of BaTiO3 particles. Materials Letters, [S.L.], v. 256, p. 126597-126597, dez. 2019. Elsevier BV. http://dx.doi.org/10.1016/j.matlet.2019.126597. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0167577X19312212?via%3Dihub. Acesso em: 05 jan. 2021.
0167-577X
10.1016/j.matlet.2019.126597
url https://repositorio.ufrn.br/handle/123456789/31585
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv Attribution 3.0 Brazil
http://creativecommons.org/licenses/by/3.0/br/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution 3.0 Brazil
http://creativecommons.org/licenses/by/3.0/br/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFRN
instname:Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
instname_str Universidade Federal do Rio Grande do Norte (UFRN)
instacron_str UFRN
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reponame_str Repositório Institucional da UFRN
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