A new technique for purifying carbon nanotubes utilizing anodic oxidation in a SPE cell was developed. On the basis of TEM observations, TG-DTA graphs and Raman analysis, it was found that most of the carbonaceous impurities were removed from the roots without significant damage to the bundles. SPE electrolysis can be carried out in pure water, compared with the widely used HNO3 oxidation process, this process demands less s...
