Ag Ion Decoration for Surface Modifications of Multi-walled Carbon Nanotubes

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dc.contributor.authorTravessa, Dilermando Nagle [UNIFESP]
dc.contributor.authorSilva, Fabio S. da
dc.contributor.authorCristovan, Fernando H. [UNIFESP]
dc.contributor.authorJorge Junior, Alberto Moreira
dc.contributor.authorCardoso, Katia Regina [UNIFESP]
dc.contributor.institutionUniversidade Federal de São Paulo (UNIFESP)
dc.contributor.institutionEmpresa Brasileira Aeronaut SA Embraer
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.date.accessioned2016-01-24T14:37:10Z
dc.date.available2016-01-24T14:37:10Z
dc.date.issued2014-05-01
dc.description.abstractThe production of high performance metal matrix composites depends on a proper design of the surface of the reinforcing phase, ensuring a good contact with a metal phase. in the present work, two Ag decorating procedures to modify the surface of multi-walled carbon nanotubes (MWCNT) were evaluated for further production of aluminum matrix composites. the procedures consisted in a two steps route based on acid oxidation of carbon nanotubes (CNT) followed by suspension in an Ag ion solution; and a single step route, based on the effect of n-dimethylformamide (DMF) as an activation agent of CNT surface, in presence of Ag ions. Transmission and scanning-transmission electron microscopy, Raman and Fourier-transformed infrared spectroscopy were employed in order to characterize the results. the two steps route resulted in Ag nano-particles homogeneously deposited over the CNT surface. the mechanism for the deposition is based on carboxyl and probably hydroxyl functional groups formed in the first step, acting as nucleation sites for Ag precipitation in the second step. the single step route resulted in the formation of sub-micrometric Ag particles heterogeneously mixed to CNT bundles.en
dc.description.affiliationUniversidade Federal de São Paulo UNIFESP, Inst Ciencia & Tecnol, BR-12231280 Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationEmpresa Brasileira Aeronaut SA Embraer, BR-12227901 Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationUniv Fed Sao Carlos UFSCar, Dept Mat Engn, BR-13560 Sao Carlos, SP, Brazil
dc.description.affiliationUnifespUniversidade Federal de São Paulo UNIFESP, Inst Ciencia & Tecnol, BR-12231280 Sao Jose Dos Campos, SP, Brazil
dc.description.sourceWeb of Science
dc.format.extent687-693
dc.identifierhttp://dx.doi.org/10.1590/S1516-14392014005000026
dc.identifier.citationMaterials Research-ibero-american Journal of Materials. Sao Carlos: Univ Fed Sao Carlos, Dept Engenharia Materials, v. 17, n. 3, p. 687-693, 2014.
dc.identifier.doi10.1590/S1516-14392014005000026
dc.identifier.issn1516-1439
dc.identifier.scieloS1516-14392014005000026
dc.identifier.urihttp://repositorio.unifesp.br/handle/11600/37698
dc.identifier.wosWOS:000338017600021
dc.language.isoeng
dc.publisherUniv Fed Sao Carlos, Dept Engenharia Materials
dc.relation.ispartofMaterials Research-ibero-american Journal of Materials
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectcarbon nanotubesen
dc.subjectAg decorationen
dc.subjectacid refluxingen
dc.subjectsurface activationen
dc.titleAg Ion Decoration for Surface Modifications of Multi-walled Carbon Nanotubesen
dc.typeinfo:eu-repo/semantics/article
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