COMPARISON OF SURFACE MICROSTRUCTURE BETWEEN HSACF AND COMMON ACF

HSACF(PAN based ACF with ultra high S BET ) is of different surface microstructure from common PAN ACF. Compared with common PAN based ACF, HSACF possesses much larger S BET and pore volume, while, is provided with much less order micro structure (almost inexistence of graphite like micro crystalline structure), less surface functional groups, especially a much smaller amount of nitrogen containing surface functional group, which exists in very different chemical state from common ACF. It is the different surface microstructure that contributes to dissimilar chemical and physical properties of nano sized pore spaces of two kinds of PAN based ACF, and accordingly profound different performance in adsorption and catalysis activity.