ИСТИНА

Carbon nanoflakes (CNFls) are as separate class of nanostructured carbons with high surface area. This type of material has an intermediate structure between graphite and graphene. In this work CNFls were synthesized by pyrolytic technique from benzene as a carbon source and MgO as a template. Obtained material differs from conventional CNFls by its low domain size of 20-100 nm. Oxidation via nitric acid treatment was occurred to insert functional groups on the CNFl surface. SEM, TEM, Raman spectroscopy, EELS and XPS were used to trace the structure transformations during oxidative treatment and then thermal analysis equipped with MS was applied to understand the defunctionalization mechanism. In order to study the kinetics of thermal defunctionalization, Kissinger’s method was used and activation energies of decomposition of carboxyls, anhydrides, phenols and oxy-carboxylic acids were calculated and compared with those from oxidized carbon nanotubes. The reported study was funded by RFBR according to the research project No. 16-29-06439 ofi_m.