One-step synthesis and microstructure of CuO-SDC composites
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , |
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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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 |
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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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openAccess |
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FapUNIFESP (SciELO) |
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FapUNIFESP (SciELO) |
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reponame:Repositório Institucional da UFRN instname:Universidade Federal do Rio Grande do Norte (UFRN) instacron:UFRN |
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Universidade Federal do Rio Grande do Norte (UFRN) |
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