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dc.contributor.authorPacheco, Flávia G.-
dc.contributor.authorCotta, Alexandre A. C.-
dc.contributor.authorGorgulho, Honória F.-
dc.contributor.authorSantos, Adelina Pinheiro-
dc.contributor.authorMacedo, Waldemar Augusto de Almeida-
dc.contributor.authorFurtado, Cláscídia Aparecida-
dc.identifier.citationPacheco, Flávia G. Comparative temporal analysis of multiwalled carbon nanotube oxidation reactions: Evaluating chemical modifications on true nanotube surface. Applied Surface Science, v.357, p.1015-1023, 2015.pt_BR
dc.description.abstractThe influence of extensive purification on oxidized multiwalled carbon nanotube surface composition was studied through the characterization and differentiation of the actual surface submitted to three oxidation methods: microwave-assisted acid oxidation, hydrogen peroxide reflux, and Fenton reaction. The oxidized samples were purified by a multi-step procedure including the sequential use of basic reflux and dispersion in dimethylformamide (DMF). The results showed a significant increase in the amount of oxidation debris with hydrogen peroxide and Fenton reaction times longer than 8 h and strong surface characteristic modification. With regard to sample purification, basic reflux led to a reduction in oxygenated group concentration of only 10% in the samples treated by acid oxidation. On the other hand, the subsequent use of DMF led to a further decrease in concentration of 39%, proving to be a more efficient method for the removal of oxidation debris.pt_BR
dc.subjectCarbon nanotubespt_BR
dc.titleComparative temporal analysis of multiwalled carbon nanotube oxidation reactions: Evaluating chemical modifications on true nanotube surfacept_BR
dc.typeArtigo Periódicopt_BR
dc.creator.affiliationCentro de Desenvolvimento da Tecnologia Nuclear, CDTN, Belo Horizonte, MG, Brasilpt_BR
dc.creator.affiliationUniversidade Federal de São João del Rei, São João Del Rei, MG, Brasilpt_BR
dc.title.journalApplied Surface Sciencept_BR
Appears in Collections:Artigo de periódico

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