A comparison between Raman spectroscopy and surface characterizations of multiwall carbon nanotubes
Résumé
The distribution of graphene units with an axial symmetry gives rise to different types of carbon filaments: nanotubes, nanofilaments and classical fibers. In this work the surfaces of different multiwalled nanotubes are characteirzed by two complementary techniques: chemical ones based on Total Surface Area and Active Surface Area measurements, associated with a physical approach the Raman scattering spectroscopy. From analysis of Raman data we deduce the values of the in-plane coherence lengths, identified as L1 the planar projection of gaphene sheets, and we propose an analysis for the observed line-width bahavior related to the graphitation step. From coherence length L1 for all types of MWNT. This analysis allows us to show the influence of both, the structural organization and the different treatments on the interfacial characteristics of these nanocarbons.