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, A. E. Kravchik

Research output: Contribution to journalArticlepeer-review

57 Scopus citations

Abstract

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 CO2 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.

Original languageEnglish (US)
Pages (from-to)1733-1741
Number of pages9
JournalJournal of Solid State Chemistry
Volume182
Issue number7
DOIs
StatePublished - Jul 2009
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

Keywords

  • Activation
  • Carbide-derived carbon
  • Carbon dioxide
  • Oxidation
  • Porosity

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