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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/41864
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dc.contributor.authorEdwards, E. R.-
dc.contributor.authorAntunes, E. F.-
dc.contributor.authorBotelho, Edson Cocchieri-
dc.contributor.authorBaldan, M. R.-
dc.contributor.authorCorat, E. J.-
dc.date.accessioned2014-05-20T15:33:09Z-
dc.date.accessioned2016-10-25T18:09:38Z-
dc.date.available2014-05-20T15:33:09Z-
dc.date.available2016-10-25T18:09:38Z-
dc.date.issued2011-11-01-
dc.identifierhttp://dx.doi.org/10.1016/j.apsusc.2011.07.032-
dc.identifier.citationApplied Surface Science. Amsterdam: Elsevier B.V., v. 258, n. 2, p. 641-648, 2011.-
dc.identifier.issn0169-4332-
dc.identifier.urihttp://hdl.handle.net/11449/41864-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/41864-
dc.description.abstractA detailed analysis by X-ray photoelectron spectroscopy was carried out on multi-walled carbon nanotube (MWCNT) surfaces after non-oxidative and oxidative purification treatments in liquid-phase. The MWCNT were produced by pyrolysis of camphor and ferrocene, that provides a high yield but with high iron contamination (similar to 15% wt). The elimination and/or oxidation of iron nanoparticles were monitored by Fe2p and O1s core level. Oxygen-based functional groups attachment was also investigated by C1s fitting. The effectiveness of each treatment in iron removal was evaluated by thermogravimetric analysis (TGA) and atomic absorption spectroscopy (AAS). The integrity of the MWCNT structure was verified by Raman spectroscopy (RS) and transmission electron microscopy (TEM). A purity degree higher than 98% was achieved only with non-oxidative treatments using sonification process. (C) 2011 Elsevier B.V. All rights reserved.en
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
dc.format.extent641-648-
dc.language.isoeng-
dc.publisherElsevier B.V.-
dc.sourceWeb of Science-
dc.subjectIron purificationen
dc.subjectXPSen
dc.subjectMWCNTen
dc.subjectAcid treatmenten
dc.subjectCamphoren
dc.subjectFerroceneen
dc.titleEvaluation of residual iron in carbon nanotubes purified by acid treatmentsen
dc.typeoutro-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionInstituto Nacional de Pesquisas Espaciais (INPE)-
dc.contributor.institutionInstituto Tecnológico de Aeronáutica (ITA)-
dc.description.affiliationSão Paulo State Univ UNESP, BR-12516410 Guaratingueta, SP, Brazil-
dc.description.affiliationNatl Inst Space Res INPE, BR-1225497 Sao Jose Dos Campos, SP, Brazil-
dc.description.affiliationAeronaut Inst Technol ITA, BR-12228900 Sao Jose Dos Campos, SP, Brazil-
dc.description.affiliationUnespSão Paulo State Univ UNESP, BR-12516410 Guaratingueta, SP, Brazil-
dc.description.sponsorshipIdCAPES: 0023/08-6-
dc.description.sponsorshipIdFAPESP: 06/03525-3-
dc.identifier.doi10.1016/j.apsusc.2011.07.032-
dc.identifier.wosWOS:000296525800001-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofApplied Surface Science-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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