Synthesis, growth process and photoluminescence properties of SrWO4 powders

Página do item simplificado
dc.contributor.authorSczancoski, J. C.
dc.contributor.authorCavalcante, L. S.
dc.contributor.authorJoya, M. R.
dc.contributor.authorEspinosa, J. W. M. [UNESP]
dc.contributor.authorPizani, P. S.
dc.contributor.authorVarela, José Arana [UNESP]
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:30:23Z
dc.date.available2014-05-20T15:30:23Z
dc.date.issued2009-02-01
dc.description.abstractSrWO4 powders were synthesized by the co-precipitation method and processed in a microwave-hydrothermal (MH) at 140 degrees C for different times. The obtained powders were analyzed by X-ray diffraction (XRD), micro-Raman (MR) spectroscopy, Fourier transform infrared (FT-IR) spectroscopy, field-emission gun scanning electron microscopy (FEG-SEM), Ultraviolet-visible (UV-vis) absorption spectroscopy anti photoluminescence (PL) measurements. XRD patterns and MR spectra showed that the SrWO4 powders present a scheelite-type tetragonal structure without the presence of deleterious phases. Fr-IR spectra exhibited a high absorption band situated at 831.57 cm(-1), which was ascribed to the W-O antisymmetric stretching vibrations into the [WO4] tetrahedron groups. FEG-SEM micrographs suggested that the processing time is able to influence in the growth process and morphology of SrWO4 powders. UV-vis absorption spectra revealed different optical band gap values for these powders. A green PL emission at room temperature was verified in SrWO4 powders when excited with 488 nm wavelength. (C) 2008 Elsevier Ins. All rights reserved.en
dc.description.affiliationUniversidade Federal de São Carlos (UFSCar), LIEC, Dept Quim & Fis, BR-13565905 São Carlos, SP, Brazil
dc.description.affiliationIQ Univ Estadual Paulista, BR-14801907 Araraquara, SP, Brazil
dc.description.affiliationUnespIQ Univ Estadual Paulista, 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.sponsorshipFAPESR Special
dc.format.extent227-236
dc.identifierhttp://dx.doi.org/10.1016/j.jcis.2008.10.034
dc.identifier.citationJournal of Colloid and Interface Science. San Diego: Academic Press Inc. Elsevier B.V., v. 330, n. 1, p. 227-236, 2009.
dc.identifier.doi10.1016/j.jcis.2008.10.034
dc.identifier.issn0021-9797
dc.identifier.urihttp://hdl.handle.net/11449/39774
dc.identifier.wosWOS:000262229700032
dc.language.isoeng
dc.publisherAcademic Press Inc. Elsevier B.V.
dc.relation.ispartofJournal of Colloid and Interface Science
dc.relation.ispartofjcr5.091
dc.relation.ispartofsjr1,221
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectSrWO4en
dc.subjectMicrowaveen
dc.subjectGrowth processen
dc.subjectBand gapen
dc.subjectPhotoluminescenceen
dc.titleSynthesis, growth process and photoluminescence properties of SrWO4 powdersen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderAcademic Press Inc. Elsevier B.V.
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

Arquivos

Licença do Pacote
Agora exibindo 1 - 2 de 2
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:

Coleções

Artigos - Físico Química - IQ
Artigos - Bioquímica e Tecnologia - IQ