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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/112926
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dc.contributor.authorLongo, Elson-
dc.contributor.authorVolanti, Diogo P.-
dc.contributor.authorLongo, Valeria M.-
dc.contributor.authorGracia, Lourdes-
dc.contributor.authorNogueira, Icamira C.-
dc.contributor.authorAlmeida, Marcio A. P.-
dc.contributor.authorPinheiro, Antonio N.-
dc.contributor.authorFerrer, Mateus M.-
dc.contributor.authorCavalcante, Laecio S.-
dc.contributor.authorAndres, Juan-
dc.date.accessioned2014-12-03T13:11:10Z-
dc.date.accessioned2016-10-25T20:12:19Z-
dc.date.available2014-12-03T13:11:10Z-
dc.date.available2016-10-25T20:12:19Z-
dc.date.issued2014-01-16-
dc.identifierhttp://dx.doi.org/10.1021/jp408167v-
dc.identifier.citationJournal Of Physical Chemistry C. Washington: Amer Chemical Soc, v. 118, n. 2, p. 1229-1239, 2014.-
dc.identifier.issn1932-7447-
dc.identifier.urihttp://hdl.handle.net/11449/112926-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/112926-
dc.description.abstractA combined experimental and theoretical study was conducted on the structure and electronic properties of alpha-Ag2WO4 to clarify the nucleation and growth processes of Ag filaments on alpha-Ag2WO4 crystals induced by electron beam irradiation under electron microscopy. X-ray diffraction with Rietveld analysis, micro-Raman and Fourier-transform infrared spectroscopy were used to analyze the structural order/disorder of alpha-Ag2WO4 crystals. These complementary techniques indicated that the microwave-assisted hydrothermal method employed in the synthesis of alpha-Ag2WO4 crystals leads to the freezing of distorted [WO6] and [AgOy] (y = 2, 4, 6 and 7) clusters as the constituent polyhedra of alpha-Ag2WO4 . On the basis of the theoretical and experimental results, we provide a complete assignment of the structure of alpha-Ag2WO4 and describe the relationship among the disorder, nucleation growth, rate of Ag formation, and photoluminescence behavior before and after the irradiation of the accelerated electron beam. Density functional theory (DFT) studies indicated significant changes in the order-disorder of the initial alpha-Ag2WO4 electronic structure, with a decrease in the band gap value from 3.55 to 2.72 eV. The first stages of the electron irradiation on alpha-Ag2WO4 crystal were investigated by DFT calculations, and we have derived a mechanism to describe the formation and growth of Ag filaments during the electronic excitation of the [AgO2] cluster.en
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
dc.description.sponsorshipGeneralitat Valenciana-
dc.description.sponsorshipMinisterio de Economia y Competitividad (Spain)-
dc.description.sponsorshipSpanish-Brazilian program-
dc.format.extent1229-1239-
dc.language.isoeng-
dc.publisherAmer Chemical Soc-
dc.sourceWeb of Science-
dc.titleToward an Understanding of the Growth of Ag Filaments on alpha-Ag2WO4 and Their Photoluminescent Properties: A Combined Experimental and Theoretical Studyen
dc.typeoutro-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionUJI-
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)-
dc.contributor.institutionUniv Estadual Piaui-
dc.description.affiliationUniv Estadual Paulista, UNESP, Inst Quim, BR-14800900 Araraquara, Brazil-
dc.description.affiliationUniv Estadual Paulista, UNESP, Dept Quim & Ciencias Ambientais, BR-15054000 Sao Jose Do Rio Preto, Brazil-
dc.description.affiliationUJI, Dept Quim Fis & Analit, Castellon de La Plana 12071, Spain-
dc.description.affiliationUniv Fed Sao Carlos, UFSCar, Dept Quim, BR-13565905 Sao Carlos, Brazil-
dc.description.affiliationUniv Estadual Piaui, UESPI, Dept Quim, BR-64002150 Teresina, Brazil-
dc.description.affiliationUnespUniv Estadual Paulista, UNESP, Inst Quim, BR-14800900 Araraquara, Brazil-
dc.description.affiliationUnespUniv Estadual Paulista, UNESP, Dept Quim & Ciencias Ambientais, BR-15054000 Sao Jose Do Rio Preto, Brazil-
dc.description.sponsorshipIdGeneralitat ValencianaPrometeo/2009/053-
dc.description.sponsorshipIdMinisterio de Economia y Competitividad (Spain)CTQ2012-36253-C03-02-
dc.description.sponsorshipIdSpanish-Brazilian programPHB2009-0065-PC-
dc.identifier.doi10.1021/jp408167v-
dc.identifier.wosWOS:000330417100057-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofJournal of Physical Chemistry C-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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