The surface analytical characterization of carbon fibers functionalized by H2…

Abstract. A systematic, time-dependent, surface-sensitive study has, for the first time, given new insights into the mechanism of the often-used, but unexplained, sulfuric/nitric acid oxidation of graphene-containing materials, such as carbon fibers and carbon nanotubes. We used X-ray photoelectron, photoacoustic FTIR and Raman spectroscopies to follow the evolution of the functionalizatio…