Author/Authors :
Ajna T?th، نويسنده , , Kateryna V. Voitko، نويسنده , , Olga Bakalinska، نويسنده , , Gennadiy P. Prykhod’ko، نويسنده , , Imre Bert?ti، نويسنده , , Amelia Mart?nez-Alonso، نويسنده , , Juan M.D. Tascon، نويسنده , , Vladimir M. Gun’ko، نويسنده , , Krisztina L?szl?، نويسنده ,
Abstract :
The poor compatibility of carbon materials with different dispersion media can be overcome by surface functionalization. In this work, multiwall carbon nanotubes (MWCNTs) were doped by oxygen and nitrogen at low concentrations. Morphological and structural changes caused by chemical treatment were monitored using nitrogen, propane and water vapor adsorption measurements. Pore size distribution (PSD) functions derived from various models are compared. The contribution of slit-shaped pores to the total surface area available for adsorbed molecules is smaller than that of cylindrical pores. Functionalities with heteroatoms (both O and N) enhance water adsorption onto MWCNTs. However, no statistical difference is observed between the water adsorption properties of O- or N-containing MWCNTs.
