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A new processing method of CaZn2(OH)(6)center dot 2H(2)O powders: Photoluminescence and growth mechanism

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dc.contributor.authorXavier, C. S. [UNESP]
dc.contributor.authorSczancoski, J. C.
dc.contributor.authorCavalcante, L. S.
dc.contributor.authorPaiva-Santos, C. O. [UNESP]
dc.contributor.authorVarela, José Arana [UNESP]
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.authorLi, M. Siu
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2014-05-20T15:31:08Z
dc.date.available2014-05-20T15:31:08Z
dc.date.issued2009-12-01
dc.description.abstractIn this communication, we report on the formation of calcium hexahydroxodizincate dehydrate, CaZn2(OH)(6)center dot 2H(2)O (CZO) powders under microwave-hydrothermal (MH) conditions. These powders were analyzed by X-ray diffraction (XRD), Field-emission gum scanning electron microscopy (FEG-SEM), ultraviolet-visible (UV-vis) absorption spectroscopy and photoluminescence (PL) measurements. XRD patterns confirmed that the pure CZO phase was obtained after MH processing performed at 130 degrees C for 2 h. FEG-SEM micrographs indicated that the morphological modifications as well as the growth of CZO microparticles are governed by Ostwald-ripening and coalescence mechanisms. UV-vis spectra showed that this material have an indirect optical band gap. The pure CZO powders exhibited an yellow PL emission when excited by 350 nm wavelength at room temperature. (C) 2009 Elsevier Masson SAS. All rights reserved.en
dc.description.affiliationUniversidade Federal de São Carlos (UFSCar), BR-13565905 São Carlos, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, IQ, BR-14801907 Araraquara, SP, Brazil
dc.description.affiliationUniv São Paulo, IFSC, BR-13560970 São Carlos, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, IQ, BR-14801907 Araraquara, SP, Brazil
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.format.extent2173-2179
dc.identifierhttp://dx.doi.org/10.1016/j.solidstatesciences.2009.09.002
dc.identifier.citationSolid State Sciences. Amsterdam: Elsevier B.V., v. 11, n. 12, p. 2173-2179, 2009.
dc.identifier.doi10.1016/j.solidstatesciences.2009.09.002
dc.identifier.issn1293-2558
dc.identifier.urihttp://hdl.handle.net/11449/40354
dc.identifier.wosWOS:000273067400025
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofSolid State Sciences
dc.relation.ispartofjcr1.861
dc.relation.ispartofsjr0,574
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectCaZn2(OH)(6)center dot 2H(2)Oen
dc.subjectLozengeen
dc.subjectRietveld refinementen
dc.subjectCrystal growthen
dc.subjectPhotoluminescenceen
dc.titleA new processing method of CaZn2(OH)(6)center dot 2H(2)O powders: Photoluminescence and growth mechanismen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
dspace.entity.typePublication
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.departmentBioquímica e Tecnologia - IQARpt
unesp.departmentFísico-Química - IQARpt

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Araraquara - IQAR - Instituto de Química