Physicochemical Study of Oxidized Mesoporous Carbon Materials

Physicochemical methods were used to study the oxidized carbon materials obtained by oxidation of the Tekhnosorb mesoporous carbon by 2–30% solutions of hydrogen peroxide. Using IR spectroscopy, titrimetry, and chemical analysis, it was shown that the oxidation of the carbon material involves the formation of oxygenated surface groups, sp2-COOH, sp3-C–OH, sp2 > C–OH, sp2 > C=O, etc. The X-ray diffraction patterns of the oxidized carbons exhibied weak broad reflections typical of hydrated graphite oxide with slightly increased interplanar spacing d002. The oxidation of the carbon material is accompanied by increase in the specific surface area and free pore volume without significant degradarion of the carbon nanoblocks.