Investigation of hydrogen physisorption active sites on the surface of porous carbonaceous materials

Chemistry. 2008;14(3):1040-6. doi: 10.1002/chem.200701042.

Abstract

Hydrogen physisorption in different carbonaceous materials was investigated in liquid nitrogen (77 K). The total hydrogen adsorption was found to have a linear relationship with the surface area of pores <30 A. The surface area and porosity of the carbon materials were determined by dinitrogen adsorption at 77 K and density function theory (DFT). The active sites for hydrogen adsorption were investigated and found to be related to the edge orientation of defective graphene micro-sheet domains.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adsorption
  • Binding Sites
  • Carbon / chemistry*
  • Hydrogen / chemistry*
  • Models, Chemical
  • Nitrogen / chemistry
  • Porosity
  • Surface Properties

Substances

  • Carbon
  • Hydrogen
  • Nitrogen