Microwave-assisted hydrothermal synthesis of ag-2(w1-xmox)o-4 heterostructures: nucleation of ag, morphology, and photoluminescence properties

Página do item simplificado
dc.contributor.authorSilva, M. D. P.
dc.contributor.authorGonçalves, Rosana de Fátima [UNIFESP]
dc.contributor.authorNogueira, I. C.
dc.contributor.authorLongo, V. M.
dc.contributor.authorMondoni, L.
dc.contributor.authorMoron, M. G.
dc.contributor.authorSantana, Y. V.
dc.contributor.authorLongo, Elson
dc.date.accessioned2019-01-21T10:29:22Z
dc.date.available2019-01-21T10:29:22Z
dc.date.issued2016
dc.description.abstractAg2W1-xMoxO4 (x = 0.0 and 0.50) powders were synthesized by the co-precipitation (drop-by-drop) method and processed using a microwave-assisted hydrothermal method. We report the real-time in situ formation and growth of Ag filaments on the Ag2W1-xMoxO4 crystals using an accelerated electron beam under high vacuum. Various techniques were used to evaluate the influence of the network-former substitution on the structural and optical properties, including photoluminescence (PL) emission, of these materials. X-ray diffraction results confirmed the phases obtained by the synthesis methods. Raman spectroscopy revealed significant changes in local order-disorder as a function of the network-former substitution. Field-emission scanning electron microscopy was used to determine the shape as well as dimensions of the Ag2W1-xMoxO4 heterostructures. The PL spectra showed that the PL-emission intensities of Ag2W1-xMoxO4 were greater than those of pure Ag2WO4, probably because of the increase of intermediary energy levels within the band gap of the Ag2W1-xMoxO4 heterostructures, as evidenced by the decrease in the band-gap values measured by ultraviolet-visible spectroscopy. (C) 2015 Elsevier B.V. All rights reserved.en
dc.description.affiliation[Goncalves, R. F.] Univ Munich, Walter Brendel Ctr Expt Med, D-81377 Munich, Germany
dc.description.affiliationLIEC-Universidade Federal de São Carlos, Rod. Washington Luis, km 235, São Carlos, SP CEP: 13565-905, Brazil
dc.description.affiliationUNIFESP—Universidade Federal de São Paulo, Rua Prof. Artur Riedel, 275, Diadema, SP CEP 09972-270, Brazil
dc.description.affiliationIFMA — Instituto Federal do Maranhão, Avenida Getúlio Vargas, no 04 — Monte Castelo, São Luís, MA CEP 65030-005, Brazil
dc.description.affiliationUSP — Universidade de São Paulo, Av. Trabalhador São-Carlense, 400 — Arnold Schimidt, São Carlos, SP CEP 13566-590, Brazil
dc.description.affiliationUTFPR—Universidade Tecnológica Federal do Paraná, Av. Alberto Carazzai, 1640, Cornélio Procópio, PR CEP 86300-000, Brazil
dc.description.affiliationLIEC-IQ-Universidade Estadual Paulista, P.O. Box 355, Araraquara, SP CEP 14801-907, Brazil
dc.description.affiliationUnifespUNIFESP-Universidade Federal de São Paulo, Rua Prof. Artur Riedel, 275, Diadema, SP CEP 09972-270, Brazil
dc.description.sourceWeb of Science
dc.description.sponsorshipCNPq [573636/2008-7]
dc.description.sponsorshipFAPESP [2013/07296-2]
dc.description.sponsorshipINCTMN [2008/57872-1]
dc.description.sponsorshipFAPEMA [176570/2013]
dc.description.sponsorshipCAPES
dc.description.sponsorshipIDCNPq: 573636/2008-7
dc.description.sponsorshipIDFAPESP: 2013/07296-2
dc.description.sponsorshipIDINCTMN: 2008/57872-1
dc.description.sponsorshipIDFAPEMA: 176570/2013
dc.format.extent428-435
dc.identifierhttps://doi.org/10.1016/j.saa.2015.08.047
dc.identifier.citationSpectrochimica Acta Part A-Molecular And Biomolecular Spectroscopy. Oxford, v. 153, p. 428-435, 2016.
dc.identifier.doi10.1016/j.saa.2015.08.047
dc.identifier.issn1386-1425
dc.identifier.urihttp://repositorio.unifesp.br/handle/11600/49187
dc.identifier.wosWOS:000365360700055
dc.language.isoeng
dc.publisherBiomed Central Ltd
dc.relation.ispartofSpectrochimica Acta Part A-Molecular And Biomolecular Spectroscopy
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectAg2wo4en
dc.subjectAg2moo4en
dc.subjectPhotoluminescenceen
dc.subjectMorphologyen
dc.subjectRaman SpectroscopyPhotocatalytic Propertiesen
dc.subjectRietveld Refinementen
dc.subjectPowder Diffractionen
dc.subjectSilver Tungstateen
dc.subjectAlpha-Ag2wo4en
dc.subjectNanorodsen
dc.subjectGrowthen
dc.subjectSemiconductoren
dc.subjectNanowiresen
dc.subjectStabilityen
dc.titleMicrowave-assisted hydrothermal synthesis of ag-2(w1-xmox)o-4 heterostructures: nucleation of ag, morphology, and photoluminescence propertiesen
dc.typeinfo:eu-repo/semantics/article
Arquivos
Coleções
ICAQF - Artigos