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Porosity control in nanoporous carbide-derived carbon by oxidation in air and carbon dioxide
Journal article   Peer reviewed

Porosity control in nanoporous carbide-derived carbon by oxidation in air and carbon dioxide

S Osswald, C Portet, Y Gogotsi, G Laudisio, J.P Singer, J.E Fischer, V.V Sokolov, J.A Kukushkina and A.E Kravchik
Journal of solid state chemistry, v 182(7), pp 1733-1741
2009

Abstract

Oxidation Activation Porosity Carbon dioxide Carbide-derived carbon
Carbide-derived carbons (CDC) allow a precise control over the pore size through the selection of the carbide precursor and varying of the synthesis conditions. However, their pore volume is limited by the carbide stoichiometry. While activation of carbons derived from various organic precursors has been widely studied, this process may similarly be able to increase the pore volume and specific surface area of CDC. Oxidation of carbide-derived carbon in air and CO 2 at different temperatures and times allows for significant increase in pore volume and specific surface area as well as control over average pore size with subnanometer accuracy. The effect of activation and associated changes in the pore volume and surface area on the hydrogen uptake are also discussed. Carbide-derived carbons (CDC) provide great potential for sorption of toxicants and gas storage applications. Activation of CDC in air and CO 2 at different temperatures and times is applied in order to maximize pore volume and specific surface area, and control the average pore size with subnanometer accuracy.

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Collaboration types
Domestic collaboration
International collaboration
Web of Science research areas
Chemistry, Inorganic & Nuclear
Chemistry, Physical
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