TiO2 and [TiO2/β-SiC] microtubes prepared from an original process

International audienc

The synthesis of SiC and TiC protective coatings for carbon fibers by the reactive replica process

International audienc

Formation of tubular silicon carbide from a carbon–silica material by using a reactive replica technique: infra-red characterisation

International audienc

Carbon/λ-MnO2 composites for supercapacitor electrodes

International audienc

Characterisation of ordered mesoporous carbons and their MCM-48 silica templates obtained by the replication technique using different carbon infiltration processes

International audienc

A comparison between Raman spectroscopy and surface characterizations of multiwall carbon nanotubes

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

Study of the structural evolutions of mesoporous MCM-48 silica infiltrated with carbon by different techniques

International audienc