An efficient method for the carboxylation of few-wall carbon nanotubes with little damage to their sidewalls

Olga Martín, Humberto R. Gutierrez, Angel Maroto-Valiente, Mauricio Terrones, Tamara Blanco, Juan Baselga

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

We report a novel method that is able to efficiently functionalize carbon nanotubes (few-walled: from 1 to 6 layers and multiwalled) with a high yield of carboxyl groups, based on treatments with H2O2 in the presence of UV light. The amount of carboxylic groups was quantified by X-ray photoelectron spectroscopy and back-titration, showing both measurements reasonable agreement. According to the zeta potential values and to the amount of suspended nanotubes, we demonstrate that the method is able to produce uniform and stable suspensions of carbon nanotubes in water. With the aid of scanning and transmission electron microscopy, thermogravimetric analysis, and Raman spectroscopy, we show that the surfaces of the tubes are not damaged by the treatment and that the functionalized tubes have an enhanced reactivity toward oxygen. This route is efficient and could now be used to fabricate polymer composites using few-walled and multiwalled carbon nanotubes.

Original languageEnglish (US)
Pages (from-to)499-507
Number of pages9
JournalMaterials Chemistry and Physics
Volume140
Issue number2-3
DOIs
StatePublished - Jul 15 2013

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'An efficient method for the carboxylation of few-wall carbon nanotubes with little damage to their sidewalls'. Together they form a unique fingerprint.

Cite this