One-step synthesis and microstructure of CuO-SDC composites

Detalhes bibliográficos
Autor(a) principal: Nascimento, Rubens Maribondo do
Data de Publicação: 2017
Outros Autores: Firmino, Hellen Cristina Torrano, Araújo, A. J. M., Dutra, Ricardo P. S., Rajesh, Surendran, Macedo, Daniel Araújo de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRN
Texto Completo: https://repositorio.ufrn.br/handle/123456789/45522
Resumo: An in situ one step synthesis route based on the polymeric precursor method was used to produce dual phase CuO-samaria doped ceria (SDC) nanocomposite powders. This chemical route allowed to obtain composite powders with reduced particle size and uniform distribution of Cu, Ce and Sm elements. The particulate material was characterized by powder X-ray diffraction (XRD) combined with Rietveld refinement. CuO-SDC sintered in air between 950 to 1050 °C and subsequently reduced to Cu-SDC cermets were further characterized by XRD and scanning electron microscopy. The open porosity was measured using the Archimedes’ principle. Suitable microstructures for both charge transfer and mass transport processes (30 to 45% porosity) were attained in Cu-SDC cermets previously fired at 1000 to 1050 °C. Overall results indicated that CuO-SDC composites and Cu-SDC cermets with potential application as anodes for solid oxide fuel cells (SOFCs) can be obtained by microstructural design. An anode supported half-cell was prepared by co-pressing and co-firing gadolinia doped ceria (CGO) and the herein synthesized CuO-SDC nanocomposite powder
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spelling Nascimento, Rubens Maribondo doFirmino, Hellen Cristina TorranoAraújo, A. J. M.Dutra, Ricardo P. S.Rajesh, SurendranMacedo, Daniel Araújo de2021-12-21T14:25:04Z2021-12-21T14:25:04Z2017-03FIRMINO, H. C. T.; ARAÚJO, A. J. M.; DUTRA, R. P. S.; NASCIMENTO, R. M.; RAJESH, S.; MACEDO, D. A. One-step synthesis and microstructure of CuO-SDC composites. Cerâmica, [S.L.], v. 63, n. 365, p. 52-57, mar. 2017. Disponível em: https://www.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132017000100052&lng=en&tlng=en. Acesso em: 05 abr. 2021. http://dx.doi.org/10.1590/0366-69132017633652088.0366-69131678-4553https://repositorio.ufrn.br/handle/123456789/4552210.1590/0366-69132017633652088An in situ one step synthesis route based on the polymeric precursor method was used to produce dual phase CuO-samaria doped ceria (SDC) nanocomposite powders. This chemical route allowed to obtain composite powders with reduced particle size and uniform distribution of Cu, Ce and Sm elements. The particulate material was characterized by powder X-ray diffraction (XRD) combined with Rietveld refinement. CuO-SDC sintered in air between 950 to 1050 °C and subsequently reduced to Cu-SDC cermets were further characterized by XRD and scanning electron microscopy. The open porosity was measured using the Archimedes’ principle. Suitable microstructures for both charge transfer and mass transport processes (30 to 45% porosity) were attained in Cu-SDC cermets previously fired at 1000 to 1050 °C. Overall results indicated that CuO-SDC composites and Cu-SDC cermets with potential application as anodes for solid oxide fuel cells (SOFCs) can be obtained by microstructural design. An anode supported half-cell was prepared by co-pressing and co-firing gadolinia doped ceria (CGO) and the herein synthesized CuO-SDC nanocomposite powderUma rota de síntese em uma etapa baseada no método dos precursores poliméricos foi usada para produzir pós do nanocompósito contendo as fases CuO e céria dopada com samária (SDC). Esta rota química permitiu obter pós compósitos com reduzido tamanho de partícula e uniforme distribuição dos elementos Cu, Ce e Sm. O material particulado foi caracterizado por difração de raios X (DRX) combinado com refinamento Rietveld dos dados de difração. Compósitos CuO-SDC sinterizados em ar entre 950 e 1050 °C e em seguida reduzidos a Cu-SDC foram caracterizados por DRX e microscopia eletrônica de varredura. A porosidade aberta foi medida usando o princípio de Arquimedes. Microestruturas adequadas para os processos de transferência de carga e transporte de massa (30 a 45% de porosidade) foram obtidas em cermets Cu-SDC previamente sinterizados a 1000 a 1050 °C. Os resultados indicaram que compósitos CuO-SDC e cermets Cu-SDC com potencial aplicação como anodos de células a combustível de óxido sólido (CCOS) podem ser obtidos por projeto microestrutural. Meia célula suportada no anodo foi preparada por coprensagem e cossinterização de céria dopada com gadolínia (CGO) e o nanocompósito obtido neste trabalhoFapUNIFESP (SciELO)Attribution-NonCommercial 3.0 Brazilhttp://creativecommons.org/licenses/by-nc/3.0/br/info:eu-repo/semantics/openAccessOne-step synthesisNanocompositesMicrostructureCu-SDC cermetsSíntese em uma etapaNanocompósitosMicroestruturaCermets Cu-SDCOne-step synthesis and microstructure of CuO-SDC compositesinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleengreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNORIGINALOne-stepSynthesisMicrostructure_NASCIMENTO_2017.pdfOne-stepSynthesisMicrostructure_NASCIMENTO_2017.pdfapplication/pdf1109758https://repositorio.ufrn.br/bitstream/123456789/45522/1/One-stepSynthesisMicrostructure_NASCIMENTO_2017.pdf0964f263a9d86ec591b8d1ff749882adMD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8920https://repositorio.ufrn.br/bitstream/123456789/45522/2/license_rdf728dfda2fa81b274c619d08d1dfc1a03MD52LICENSElicense.txtlicense.txttext/plain; charset=utf-81484https://repositorio.ufrn.br/bitstream/123456789/45522/3/license.txte9597aa2854d128fd968be5edc8a28d9MD53123456789/455222021-12-21 11:25:05.033oai:https://repositorio.ufrn.br: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Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2021-12-21T14:25:05Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false
dc.title.pt_BR.fl_str_mv One-step synthesis and microstructure of CuO-SDC composites
title One-step synthesis and microstructure of CuO-SDC composites
spellingShingle One-step synthesis and microstructure of CuO-SDC composites
Nascimento, Rubens Maribondo do
One-step synthesis
Nanocomposites
Microstructure
Cu-SDC cermets
Síntese em uma etapa
Nanocompósitos
Microestrutura
Cermets Cu-SDC
title_short One-step synthesis and microstructure of CuO-SDC composites
title_full One-step synthesis and microstructure of CuO-SDC composites
title_fullStr One-step synthesis and microstructure of CuO-SDC composites
title_full_unstemmed One-step synthesis and microstructure of CuO-SDC composites
title_sort One-step synthesis and microstructure of CuO-SDC composites
author Nascimento, Rubens Maribondo do
author_facet Nascimento, Rubens Maribondo do
Firmino, Hellen Cristina Torrano
Araújo, A. J. M.
Dutra, Ricardo P. S.
Rajesh, Surendran
Macedo, Daniel Araújo de
author_role author
author2 Firmino, Hellen Cristina Torrano
Araújo, A. J. M.
Dutra, Ricardo P. S.
Rajesh, Surendran
Macedo, Daniel Araújo de
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Nascimento, Rubens Maribondo do
Firmino, Hellen Cristina Torrano
Araújo, A. J. M.
Dutra, Ricardo P. S.
Rajesh, Surendran
Macedo, Daniel Araújo de
dc.subject.por.fl_str_mv One-step synthesis
Nanocomposites
Microstructure
Cu-SDC cermets
Síntese em uma etapa
Nanocompósitos
Microestrutura
Cermets Cu-SDC
topic One-step synthesis
Nanocomposites
Microstructure
Cu-SDC cermets
Síntese em uma etapa
Nanocompósitos
Microestrutura
Cermets Cu-SDC
description An in situ one step synthesis route based on the polymeric precursor method was used to produce dual phase CuO-samaria doped ceria (SDC) nanocomposite powders. This chemical route allowed to obtain composite powders with reduced particle size and uniform distribution of Cu, Ce and Sm elements. The particulate material was characterized by powder X-ray diffraction (XRD) combined with Rietveld refinement. CuO-SDC sintered in air between 950 to 1050 °C and subsequently reduced to Cu-SDC cermets were further characterized by XRD and scanning electron microscopy. The open porosity was measured using the Archimedes’ principle. Suitable microstructures for both charge transfer and mass transport processes (30 to 45% porosity) were attained in Cu-SDC cermets previously fired at 1000 to 1050 °C. Overall results indicated that CuO-SDC composites and Cu-SDC cermets with potential application as anodes for solid oxide fuel cells (SOFCs) can be obtained by microstructural design. An anode supported half-cell was prepared by co-pressing and co-firing gadolinia doped ceria (CGO) and the herein synthesized CuO-SDC nanocomposite powder
publishDate 2017
dc.date.issued.fl_str_mv 2017-03
dc.date.accessioned.fl_str_mv 2021-12-21T14:25:04Z
dc.date.available.fl_str_mv 2021-12-21T14:25:04Z
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 FIRMINO, H. C. T.; ARAÚJO, A. J. M.; DUTRA, R. P. S.; NASCIMENTO, R. M.; RAJESH, S.; MACEDO, D. A. One-step synthesis and microstructure of CuO-SDC composites. Cerâmica, [S.L.], v. 63, n. 365, p. 52-57, mar. 2017. Disponível em: https://www.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132017000100052&lng=en&tlng=en. Acesso em: 05 abr. 2021. http://dx.doi.org/10.1590/0366-69132017633652088.
dc.identifier.uri.fl_str_mv https://repositorio.ufrn.br/handle/123456789/45522
dc.identifier.issn.none.fl_str_mv 0366-6913
1678-4553
dc.identifier.doi.none.fl_str_mv 10.1590/0366-69132017633652088
identifier_str_mv FIRMINO, H. C. T.; ARAÚJO, A. J. M.; DUTRA, R. P. S.; NASCIMENTO, R. M.; RAJESH, S.; MACEDO, D. A. One-step synthesis and microstructure of CuO-SDC composites. Cerâmica, [S.L.], v. 63, n. 365, p. 52-57, mar. 2017. Disponível em: https://www.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132017000100052&lng=en&tlng=en. Acesso em: 05 abr. 2021. http://dx.doi.org/10.1590/0366-69132017633652088.
0366-6913
1678-4553
10.1590/0366-69132017633652088
url https://repositorio.ufrn.br/handle/123456789/45522
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv Attribution-NonCommercial 3.0 Brazil
http://creativecommons.org/licenses/by-nc/3.0/br/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution-NonCommercial 3.0 Brazil
http://creativecommons.org/licenses/by-nc/3.0/br/
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dc.publisher.none.fl_str_mv FapUNIFESP (SciELO)
publisher.none.fl_str_mv FapUNIFESP (SciELO)
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