Cr3+ and Cr4+ luminescence in glass ceramic silica
dc.contributor.author | Martines, Marco A. U. [UNESP] | |
dc.contributor.author | Davolos, Marian Rosaly [UNESP] | |
dc.contributor.author | Jafelicci, Miguel [UNESP] | |
dc.contributor.author | de Souza, Dione F. | |
dc.contributor.author | Nunes, Luiz A. O. | |
dc.contributor.institution | Universidade Estadual Paulista (Unesp) | |
dc.contributor.institution | Universidade de São Paulo (USP) | |
dc.date.accessioned | 2014-05-20T15:31:03Z | |
dc.date.available | 2014-05-20T15:31:03Z | |
dc.date.issued | 2008-11-01 | |
dc.description.abstract | This paper reports on the effect of glass ceramic silica matrix on [CrO4](4-) and Cr2O3 NIR and visible luminescence. Chromium-containing silica was obtained by precipitation from water-glass and chromium nitrate acid solution with thermal treatment at 1000 degrees C. From XRD results silica and silica-chromium samples are crystalline. The chromium emission spectrum presents two main broad bands: one in the NIR region (1.1-1.7 mu m) and other in the visible region (0.6-0.7 mu m) assigned to Cr4+ and to Cr3+, respectively. This thermal treated glass ceramic silica-chromium sample stabilizes the [CrO4](4-) where Cr4+ substitutes for Si4+ and also hexacoordinated Cr3+ group probably as segregated phase in the system. It can be pointed out that luminescence spectroscopy is a powerful toot for detecting the two chromium optical centers in the glass ceramic silica. (C) 2008 Elsevier B.V. All rights reserved. | en |
dc.description.affiliation | UNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil | |
dc.description.affiliation | Univ São Paulo, Inst Fis, BR-13560970 São Carlos, SP, Brazil | |
dc.description.affiliationUnesp | UNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil | |
dc.description.sponsorship | Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) | |
dc.description.sponsorship | Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) | |
dc.description.sponsorship | Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) | |
dc.format.extent | 1787-1790 | |
dc.identifier | http://dx.doi.org/10.1016/j.jlumin.2008.04.011 | |
dc.identifier.citation | Journal of Luminescence. Amsterdam: Elsevier B.V., v. 128, n. 11, p. 1787-1790, 2008. | |
dc.identifier.doi | 10.1016/j.jlumin.2008.04.011 | |
dc.identifier.issn | 0022-2313 | |
dc.identifier.lattes | 4284809342546287 | |
dc.identifier.uri | http://hdl.handle.net/11449/40295 | |
dc.identifier.wos | WOS:000259158500010 | |
dc.language.iso | eng | |
dc.publisher | Elsevier B.V. | |
dc.relation.ispartof | Journal of Luminescence | |
dc.relation.ispartofjcr | 2.732 | |
dc.relation.ispartofsjr | 0,694 | |
dc.rights.accessRights | Acesso restrito | pt |
dc.source | Web of Science | |
dc.subject | silica | en |
dc.subject | Chromium(III) and (IV) | en |
dc.subject | VIS and NIR luminescence | en |
dc.title | Cr3+ and Cr4+ luminescence in glass ceramic silica | en |
dc.type | Artigo | pt |
dcterms.license | http://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy | |
dcterms.rightsHolder | Elsevier B.V. | |
dspace.entity.type | Publication | |
relation.isOrgUnitOfPublication | bc74a1ce-4c4c-4dad-8378-83962d76c4fd | |
relation.isOrgUnitOfPublication.latestForDiscovery | bc74a1ce-4c4c-4dad-8378-83962d76c4fd | |
unesp.author.lattes | 4284809342546287 | |
unesp.author.orcid | 0000-0001-8326-1465[2] | |
unesp.campus | Universidade Estadual Paulista (UNESP), Instituto de Química, Araraquara | pt |
unesp.department | Química Inorgânica - IQAR | pt |
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