Mild and Efficient Oxidation of Multi-walled Carbon Nanotubes with Ozone in DMF

In this research, ozone oxidation of multi-walled carbon nanotubes (MWCNTs) in dimethyl formamide (DMF) as a solvent which would be unaffected by ozone, was studied. The reactions performed under ambient conditions and oxidized products were yielded in high concentration of oxygenated groups and high dispersion stability in organic solvents. The obtained products were characterized with Attenuated Tunnelling Reflectance (ATR), Raman spectroscopy, scanning electron microscopy (SEM), X-ray diffractometry (XRD), back titration and detection of ispersion stability in water and organic solents. The results confirm the presence of high concentrations of oxidative groups on the surfaces of carbon nanotubes (CNTs) treated by the method of the present work.

Keywords:

Multiwalled Carbon Nanotubes , Ozone , Oxidation , DMF , Dispersion