Thermal behaviour of intercalated 8-hydroxyquinoline (oxine) in montmorillonite clay

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dc.contributor.authorPastre, I. A.
dc.contributor.authorOliveria, I. D.
dc.contributor.authorMoitinho, ABS
dc.contributor.authorde Souza, G. R.
dc.contributor.authorIonashiro, E. Y.
dc.contributor.authorFertonani, F. L.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:24:14Z
dc.date.available2014-05-20T15:24:14Z
dc.date.issued2004-01-01
dc.description.abstractThe composite montmorillonite-8-hydroxyquinoline (Swy-1-8-HQ) was prepared by two different processes and studied by using thermogravimetric analysis (TG/DTG and DSC), as well as helpful techniques as fluorescence in the UV-visible region and X-ray diffraction. The composites developed fluorescent appearance, however with quantum poor efficiency and they exhibited distinct TG and DSC thermal behavior. The fluorescence data of spectra associated to the TG/DT curves allowed to suggest that the 8-HQ was present in the composites in two different circumstances: 1 - intercalated in the interlayer spaces (Swy-1-8-HQ2), rigidly associated to the Substrate feasible as a monolayer with the aromatic rings parallel to the silica layer; and/or, 2 - adsorbed on the Surface (Swy-1-8-HQ1), either as a bilayer formation or tilting of the molecules to the silicate layer sheet. All results confirmed above are in agreement with X-ray diffraction patterns, once the interlayer space increases when 8-HQ is incorporated. The experimental results confirm the formation of the composites in agreement with the method used in the preparation.en
dc.description.affiliationUniv Estadual Paulista, Inst Biociencias Letras & Ciências Exatas, BR-15054000 São Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Biociencias Letras & Ciências Exatas, BR-15054000 São Paulo, Brazil
dc.format.extent661-669
dc.identifierhttp://dx.doi.org/10.1023/B:JTAN.0000027160.19388.0c
dc.identifier.citationJournal of Thermal Analysis and Calorimetry. Dordrecht: Kluwer Academic Publ, v. 75, n. 2, p. 661-669, 2004.
dc.identifier.doi10.1023/B:JTAN.0000027160.19388.0c
dc.identifier.issn1388-6150
dc.identifier.urihttp://hdl.handle.net/11449/34873
dc.identifier.wosWOS:000189377000038
dc.language.isoeng
dc.publisherKluwer Academic Publ
dc.relation.ispartofJournal of Thermal Analysis and Calorimetry
dc.relation.ispartofjcr2.209
dc.relation.ispartofsjr0,587
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectDSCpt
dc.subjectmontmorillonitept
dc.subjectoxinept
dc.subjectTG/DTGpt
dc.subjectX-ray diffractionpt
dc.titleThermal behaviour of intercalated 8-hydroxyquinoline (oxine) in montmorillonite clayen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights
dcterms.rightsHolderKluwer Academic Publ

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