Au1-xcux Colloidal Nanoparticles Synthesized Via A One-pot Approach: Understanding The Temperature Effect On The Au : Cu Ratio

dc.creatorDestro
dc.creatorPriscila; Colombo
dc.creatorMassimo; Prato
dc.creatorMirko; Brescia
dc.creatorRosaria; Manna
dc.creatorLiberato; Zanchet
dc.creatorDaniela
dc.date2016
dc.date2017-11-13T13:44:21Z
dc.date2017-11-13T13:44:21Z
dc.date.accessioned2018-03-29T05:59:00Z
dc.date.available2018-03-29T05:59:00Z
dc.identifierRsc Advances. Royal Soc Chemistry, v. 6, p. 22213 - 22221, 2016.
dc.identifier2046-2069
dc.identifierWOS:000371716300002
dc.identifier10.1039/c6ra02027e
dc.identifierhttp://pubs.rsc.org/-/content/articlelanding/2016/ra/c6ra02027e#!divAbstract
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/328746
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1365771
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionGold-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.
dc.description6
dc.description27
dc.description22213
dc.description22221
dc.descriptionSao Paulo Research Foundation (FAPESP) [2011/50727-9]
dc.descriptionConselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) [870359/1997-5]
dc.descriptionCoordenacao de Aperfeicoamento de Pessoal de Nivel Superior-Science Without Borders Program (CAPES) [99999.013076/2013-02]
dc.descriptionCNPq [306242/2010-4, 309373/2014-0]
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.languageEnglish
dc.publisherRoyal Soc Chemistry
dc.publisherCambridge
dc.relationRSC Advances
dc.rightsaberto
dc.sourceWOS
dc.subjectAlloy Nanoparticles
dc.subjectBimetallic Nanoparticles
dc.subjectCopper
dc.subjectMetal
dc.subjectNanocrystals
dc.subjectNanotubes
dc.subjectCatalysis
dc.subjectSilver
dc.subjectSize
dc.titleAu1-xcux Colloidal Nanoparticles Synthesized Via A One-pot Approach: Understanding The Temperature Effect On The Au : Cu Ratio
dc.typeArtículos de revistas


Este ítem pertenece a la siguiente institución