Modifications induced by acetylacetone in properties of sol-gel derived Y3Al5O12:Tb3+ - I: Structural and morphological organizations

Página do item simplificado
dc.contributor.authorPotdevin, Audrey
dc.contributor.authorChadeyron, Geneviève
dc.contributor.authorBriois, Valérie
dc.contributor.authorLeroux, Fabrice
dc.contributor.authorSantilli, Celso Valentim [UNESP]
dc.contributor.authorDubois, Marc
dc.contributor.authorBoyer, Damien
dc.contributor.authorMahiou, Rachid
dc.contributor.institutionClermont Université
dc.contributor.institutionL'Orme des Merisiers, Saint-Aubin
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:24:49Z
dc.date.available2014-05-27T11:24:49Z
dc.date.issued2010-10-07
dc.description.abstractAcetylacetone has been used as a chemical modifier for the synthesis of undoped and Tb3+-doped Y3Al5O12 powders. A systematic investigation concerning its influence on the structural and morphological properties of amorphous and crystallized samples has been carried out. These properties have been comparatively studied by means of X-ray diffraction, infrared spectroscopy, SEM, XAS and SAXS. 27Al NMR and EPR experiments have been performed to complete the study. The combined results have evidenced that acetylacetone promotes organic groups departure during calcination, entailing a better structural organization at lower temperatures compared with unmodified powders. Structuration has been proven to occur at short-scale range until a 600°C heating treatment before being extended by coalescence at higher temperatures. Finally, the presence of acac ligands on the alkoxides leads to a monomer-cluster aggregation process, and thus to a more open network. © 2010 The Royal Society of Chemistry.en
dc.description.affiliationClermont Université Ecole Nationale Supérieure de Chimie de Clermont-Ferrand LMI, BP 10448, F-63000 Clermont-Ferrand
dc.description.affiliationCNRS UMR 6002 LMI, F-63173 Aubiere
dc.description.affiliationSynchrotron SOLEIL L'Orme des Merisiers, Saint-Aubin, BP48, 91192 Gif sur Yvette
dc.description.affiliationClermont Université Université Blaise Pascal LMI, BP 10448, F-63000 Clermont-Ferrand
dc.description.affiliationInstituto de Quimica, 14900 Araraquara SP
dc.format.extent8706-8717
dc.identifierhttp://dx.doi.org/10.1039/c005452f
dc.identifier.citationDalton Transactions, v. 39, n. 37, p. 8706-8717, 2010.
dc.identifier.doi10.1039/c005452f
dc.identifier.issn1477-9226
dc.identifier.issn1477-9234
dc.identifier.lattes5584298681870865
dc.identifier.orcid0000-0002-8356-8093
dc.identifier.scopus2-s2.0-77956459038
dc.identifier.urihttp://hdl.handle.net/11449/71922
dc.language.isoeng
dc.relation.ispartofDalton Transactions
dc.relation.ispartofjcr4.099
dc.relation.ispartofsjr1,306
dc.relation.ispartofsjr1,306
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectAcetylacetone
dc.subjectAlkoxides
dc.subjectChemical modifiers
dc.subjectCluster aggregation
dc.subjectHeating treatments
dc.subjectHigher temperatures
dc.subjectOpen network
dc.subjectOrganic group
dc.subjectSEM
dc.subjectStructural and morphological properties
dc.subjectStructural organization
dc.subjectStructuration
dc.subjectSystematic investigations
dc.subjectAgglomeration
dc.subjectAluminum
dc.subjectCalcination
dc.subjectCoalescence
dc.subjectGels
dc.subjectInfrared spectroscopy
dc.subjectPowders
dc.subjectSynthesis (chemical)
dc.subjectTerbium alloys
dc.subjectX ray diffraction
dc.subjectAcetone
dc.titleModifications induced by acetylacetone in properties of sol-gel derived Y3Al5O12:Tb3+ - I: Structural and morphological organizationsen
dc.typeArtigo
dcterms.licensehttp://www.rsc.org/AboutUs/Copyright/Authordeposition.asp
unesp.author.lattes5584298681870865[5]
unesp.author.orcid0000-0002-8356-8093[5]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

Arquivos

Coleções

Artigos - Físico Química - IQ