Low temperature synthesis of pure and Fe-doped HfSiO4: Determination of Si and Fe fractions by neutron activation analysis

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dc.contributor.authorSALES, T.N.S.
dc.contributor.authorBOSCH-SANTOS, B.
dc.contributor.authorSAIKI, M.
dc.contributor.authorBURIMOVA, A.
dc.contributor.authorPEREIRA, L.F.D.
dc.contributor.authorSAXENA, R.N.
dc.contributor.authorCARBONARI, A.W.
dc.coverageInternacionalpt_BR
dc.date.accessioned2019-03-28T13:29:44Z
dc.date.available2019-03-28T13:29:44Z
dc.date.issued2019pt_BR
dc.description.abstractA new method of synthesis of hafnium silicate HfSiO4 (also known as hafnon) is reported. We observed a selfcontrolled incorporation of SiO2 from the quartz tube in which a sample of hafnium oxide nanoparticles was heated. This approach was then adapted to Fe-doped hafnon production. Sample structure, morphology and composition were characterized by X-ray diffraction, electron microscopy and neutron activation analysis. Diffraction data has shown that lattice parameters of doped HfSiO4 thus obtained are very close to those previously known for bare hafnon. The hafnon-like phase stabilized at T=900 °C which is about 500 °C lower than the corresponding transition of bare bulk hafnium silicate. The fractions of Si and Fe in the composite matrices were determined with neutron activation analysis. These results completed by X-ray diffraction data allowed to assume that (i) Fe initially substituted Hf in the HfO2 lattice; (ii) there was no migration of iron atoms from Hf to Si sites at the formation of hafnon-like phase; (iii) doped and undoped hafnium oxide has taken as much Si from the quartz as was needed for the arrangement of Fe1-xHfxSiO4 tetragonal system, 0≤x<0.2. Our results are consistent with those obtained for similar materials, such as metal (Fe,V) doped zircon, where the dopant also demonstrated catalytic effect on phase stabilization.pt_BR
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt_BR
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)pt_BR
dc.description.sponsorshipIDFAPESP: 14/14001-1pt_BR
dc.description.sponsorshipIDCNPq: 0142271/2014-4; 303808/2014-4; 304627/2017-8pt_BR
dc.description.sponsorshipIDCAPES: 33002010050P7-PNPDpt_BR
dc.format.extent287-290pt_BR
dc.identifier.citationSALES, T.N.S.; BOSCH-SANTOS, B.; SAIKI, M.; BURIMOVA, A.; PEREIRA, L.F.D.; SAXENA, R.N.; CARBONARI, A.W. Low temperature synthesis of pure and Fe-doped HfSiO4: Determination of Si and Fe fractions by neutron activation analysis. <b>Radiation Physics and Chemistry</b>, v. 155, p. 287-290, 2019. SI. DOI: <a href="https://dx.doi.org/10.1016/j.radphyschem.2018.06.040">10.1016/j.radphyschem.2018.06.040</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/29811.
dc.identifier.doi10.1016/j.radphyschem.2018.06.040pt_BR
dc.identifier.issn0969-806Xpt_BR
dc.identifier.orcidaguardandopt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-4499-5949
dc.identifier.percentilfi60.153pt_BR
dc.identifier.percentilfiCiteScore73.00
dc.identifier.suplementoSIpt_BR
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/29811
dc.identifier.vol155pt_BR
dc.relation.ispartofRadiation Physics and Chemistrypt_BR
dc.rightsopenAccesspt_BR
dc.subjecthafnium silicates
dc.subjecttemperature range 0065-0273 k
dc.subjectnanoparticles
dc.subjectiron
dc.subjectdoped materials
dc.subjectneutron activation analysis
dc.subjectsol-gel process
dc.subjectsilicon additions
dc.titleLow temperature synthesis of pure and Fe-doped HfSiO4: Determination of Si and Fe fractions by neutron activation analysispt_BR
dc.typeArtigo de periódicopt_BR
dspace.entity.typePublication
ipen.autorANASTASIA BURIMOVA
ipen.autorRAJENDRA NARAIN SAXENA
ipen.autorARTUR WILSON CARBONARI
ipen.autorLUCIANO FABRICIO DIAS PEREIRA
ipen.autorMITIKO SAIKI
ipen.autorBRIANNA BOSCH DOS SANTOS
ipen.autorTATIANE DA SILVA NASCIMENTO
ipen.codigoautor14454
ipen.codigoautor1329
ipen.codigoautor1437
ipen.codigoautor3346
ipen.codigoautor1178
ipen.codigoautor7480
ipen.codigoautor9322
ipen.contributor.ipenauthorANASTASIA BURIMOVA
ipen.contributor.ipenauthorRAJENDRA NARAIN SAXENA
ipen.contributor.ipenauthorARTUR WILSON CARBONARI
ipen.contributor.ipenauthorLUCIANO FABRICIO DIAS PEREIRA
ipen.contributor.ipenauthorMITIKO SAIKI
ipen.contributor.ipenauthorBRIANNA BOSCH DOS SANTOS
ipen.contributor.ipenauthorTATIANE DA SILVA NASCIMENTO
ipen.date.recebimento19-03pt_BR
ipen.identifier.fi2.226pt_BR
ipen.identifier.fiCiteScore3.7
ipen.identifier.ipendoc25614pt_BR
ipen.identifier.iwosWoSpt_BR
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ipen.type.genreArtigo
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sigepi.autor.atividadeBOSCH-SANTOS, B.:7480:310:Npt_BR
sigepi.autor.atividadeSAIKI, M.:1178:320:Npt_BR
sigepi.autor.atividadeBURIMOVA, A.:14454:310:Npt_BR
sigepi.autor.atividadePEREIRA, L.F.D.:3346:310:Npt_BR
sigepi.autor.atividadeSAXENA, R.N.:1329:310:Npt_BR
sigepi.autor.atividadeCARBONARI, A.W.:1437:310:Npt_BR
sigepi.autor.atividadeSALES, T.N.S.:9322:-1:S
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