Facile preparation of apatite-type lanthanum silicate by a new water-based sol-gel process

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dc.contributor.authorYAMAGATA, CHIEKOpt_BR
dc.contributor.authorELIAS, DANIEL R.pt_BR
dc.contributor.authorPAIVA, MAYARA R.S.pt_BR
dc.contributor.authorMISSO, AGATHA M.pt_BR
dc.contributor.authorCASTANHO, SONIA R.H.M.pt_BR
dc.coverageInternacionalpt_BR
dc.date.accessioned2014-07-15T13:33:36Zpt_BR
dc.date.accessioned2014-07-30T11:47:52Z
dc.date.available2014-07-15T13:33:36Zpt_BR
dc.date.available2014-07-30T11:47:52Z
dc.date.issued2013pt_BR
dc.description.abstractIn recent years, apatite-type lanthanum silicates ([Ln10x(XO4)6O3–1.5x] (X = Si or Ge)) have been studied for use in SOFC (solid oxide fuel cells), at low temperature (600–800 8C), due to its ionic conductivity which is higher than that of YSZ (Yttrium Stabilized Zirconia) electrolyte. For this reason they are very promising materials as solid electrolyte for SOFCs. Synthesis of functional nanoparticles is a challenge in the nanotechnology. In this work, apatite-type lanthanum silicate nanoparticles were synthesized by a water-based sol–gel process, i.e., sol–gel technique followed by chemical precipitation of lanthanum hydroxide on the gel of the silica. Na2SiO3 waste solution was used as silica source. Spherical aerogel silica was prepared by acid catalyzed reaction, followed by precipitation of lanthanum hydroxide to obtain the precursor of apatite-type lanthanum silicate. Powders of apatite-type lanthanum silicate achieved from the precursor were characterized by thermal analysis, X-ray diffraction (XRD), scanning electron microscopy (SEM) and specific surface area measurements (BET). The apatite phase was formed at 900 8C.
dc.format.extent2227-2231pt_BR
dc.identifier.citationYAMAGATA, CHIEKO; ELIAS, DANIEL R.; PAIVA, MAYARA R.S.; MISSO, AGATHA M.; CASTANHO, SONIA R.H.M. Facile preparation of apatite-type lanthanum silicate by a new water-based sol-gel process. <b>Materials Research Bulletin</b>, v. 48, n. 6, p. 2227-2231, 2013. DOI: <a href="https://dx.doi.org/10.1016/j.materresbull.2013.02.041">10.1016/j.materresbull.2013.02.041</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/4076.
dc.identifier.doi10.1016/j.materresbull.2013.02.041
dc.identifier.fasciculo6pt_BR
dc.identifier.issn0025-5408pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-0155-9100
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/4076pt_BR
dc.identifier.vol48pt_BR
dc.relation.ispartofMaterials Research Bulletinpt_BR
dc.rightsopenAccessen
dc.subjectapatitespt_BR
dc.subjectlanthanum silicatespt_BR
dc.subjectnanostructurespt_BR
dc.subjectparticlespt_BR
dc.subjectsynthesispt_BR
dc.subjectsol-gel processpt_BR
dc.subjectx-ray diffractionpt_BR
dc.titleFacile preparation of apatite-type lanthanum silicate by a new water-based sol-gel processpt_BR
dc.typeArtigo de periódicopt_BR
dspace.entity.typePublication
ipen.autorDANIEL RICCO ELIAS
ipen.autorAGATHA MATOS MISSO
ipen.autorSONIA REGINA HOMEM DE MELLO CASTANHO
ipen.autorMAYARA RAFAELA SOARES PAIVA
ipen.autorCHIEKO YAMAGATA
ipen.codigoautor10292
ipen.codigoautor10611
ipen.codigoautor1552
ipen.codigoautor10122
ipen.codigoautor177
ipen.contributor.ipenauthorDANIEL RICCO ELIAS
ipen.contributor.ipenauthorAGATHA MATOS MISSO
ipen.contributor.ipenauthorSONIA REGINA HOMEM DE MELLO CASTANHO
ipen.contributor.ipenauthorMAYARA RAFAELA SOARES PAIVA
ipen.contributor.ipenauthorCHIEKO YAMAGATA
ipen.date.recebimento13-08pt_BR
ipen.identifier.fi1.968pt_BR
ipen.identifier.ipendoc19079pt_BR
ipen.identifier.iwosWoSpt_BR
ipen.identifier.ods7
ipen.range.fi1.500 - 2.999
ipen.type.genreArtigo
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relation.isAuthorOfPublication.latestForDiscovery9a4bd34a-7406-42f3-8741-5c934840fdc9
sigepi.autor.atividadeYAMAGATA, CHIEKO:177:720:Spt_BR
sigepi.autor.atividadeELIAS, DANIEL R.:10292:720:Npt_BR
sigepi.autor.atividadePAIVA, MAYARA R.S.:10122:720:Npt_BR
sigepi.autor.atividadeMISSO, AGATHA M.:10611:720:Npt_BR
sigepi.autor.atividadeCASTANHO, SONIA R.H.M.:1552:720:Npt_BR
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