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dc.contributor.CRUESPUNIVERSIDADE DE ESTADUAL DE CAMPINASpt_BR
dc.typeArtigo de Periódicopt_BR
dc.titleAu1-xcux Colloidal Nanoparticles Synthesized Via A One-pot Approach: Understanding The Temperature Effect On The Au : Cu Ratiopt_BR
dc.contributor.authorDestropt_BR
dc.contributor.authorP; Colombopt_BR
dc.contributor.authorM; Pratopt_BR
dc.contributor.authorM; Bresciapt_BR
dc.contributor.authorR; Mannapt_BR
dc.contributor.authorL; Zanchetpt_BR
dc.contributor.authorDpt_BR
unicamp.author.emaildaniela@iqm.unicamp.brpt_BR
dc.subjectAlloy Nanoparticlespt_BR
dc.subjectBimetallic Nanoparticlespt_BR
dc.subjectCopperpt_BR
dc.subjectMetalpt_BR
dc.subjectNanocrystalspt_BR
dc.subjectNanotubespt_BR
dc.subjectCatalysispt_BR
dc.subjectSilverpt_BR
dc.subjectSizept_BR
dc.description.abstractGold-copper nanoparticles (Au1-xCux NPs) have been reported as a versatile system to study various aspects related to the colloidal synthesis of bimetallic nanoparticles. In this work, Au1-xCux NPs are synthesized via a one pot approach using equimolar amounts of Au and Cu. Different compositions are obtained by changing the reaction temperature. By taking aliquots at crucial stages of the synthesis and combining several techniques, such as elemental analysis, X-ray diffraction and X-ray photoelectron spectroscopy, it was possible to shed light on the synthesis mechanism: the formation of Au NPs occurs at low temperature, then the higher the synthesis temperature the higher the Cu content in the NPs. In parallel to the Au NPs formation, results of energy-dispersive X-ray spectroscopy analyses carried out in scanning transmission electron microscopy mode suggest the formation of a Cu-rich phase at the early stages of the synthesis. Such a phase, not detectable by X-ray diffraction, acts as a reservoir of Cu species that are slowly released to form the Au1-xCux alloy NPs through a digestive ripening-like process. The reaction temperature and annealing time affect the final Au : Cu ratio but had no significant effect on the final size of the particles, which for all compositions is approximately 14 nm.en
dc.relation.ispartofRSC Advancespt_BR
dc.publisher.cityCAMBRIDGEpt_BR
dc.publisherROYAL SOC CHEMISTRYpt_BR
dc.date.issued2016pt_BR
dc.identifier.citationRsc Advances. ROYAL SOC CHEMISTRY, n. 6, n. 27, p. 22213 - 22221.pt_BR
dc.language.isoEnglishpt_BR
dc.description.volume6pt_BR
dc.description.issuenumberpt_BR
dc.description.firstpage22213pt_BR
dc.description.lastpage22221pt_BR
dc.rightsfechadopt_BR
dc.sourceWOSpt_BR
dc.identifier.issn2046-2069pt_BR
dc.identifier.wosidWOS:000371716300002pt_BR
dc.identifier.doi10.1039/c6ra02027ept_BR
dc.identifier.urlhttp://pubs.rsc.org/en/Content/ArticleLanding/2016/RA/c6ra02027e#!divAbstractpt_BR
dc.description.sponsorshipSao Paulo Research Foundation (FAPESP) [2011/50727-9]pt_BR
dc.description.sponsorshipConselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) [870359/1997-5]pt_BR
dc.description.sponsorshipCoordenacao de Aperfeicoamento de Pessoal de Nivel Superior-Science Without Borders Program (CAPES) [99999.013076/2013-02]pt_BR
dc.description.sponsorshipCNPq [306242/2010-4, 309373/2014-0]pt_BR
dc.description.sponsorship1Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt_BR
dc.description.sponsorship1Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsorship1Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)pt_BR
dc.description.sponsorship1Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.date.available2016-12-06T18:32:26Z-
dc.date.accessioned2016-12-06T18:32:26Z-
dc.description.provenanceMade available in DSpace on 2016-12-06T18:32:26Z (GMT). No. of bitstreams: 1 000371716300002.pdf: 2238788 bytes, checksum: cb675c86d1478222020c1c3ce823787e (MD5) Previous issue date: 2016en
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/320540-
dc.description.conferencelocationpt_BR
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