Analysis of surface modification of carbon nanotubes under different oxidation treatments
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Carbon nanotubes


Carbon nanotubes oxidation has attracted the interest of researchers, because in addition to eliminating impurities, it increases the dispersion of aggregates creating new interac­tions between materials. In this work, carbon nanotubes (CNT) were treated using two dif­ferent oxidation methods to determine the effects of each treatment on the surface area of the material. The following methods were used: the traditional chemical treatment (using strong acids) and a treatment supported by microwaves. Results showed that both treat­ments reduced the surface area (traditional CNT < microwaves CNT < non-treated CNT). By using microwaves, oxidation time was shortened, greater concentration of carboxylic func­tional groups was obtained and damage to the structure diminished, resulting in oxidized nanotubes with improved structural characteristics.
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