Oxygen adsorption by fullerenes and carbon nanostructures

The dependences of oxygen sorption on time, gas pressure (up to 760 torr), and sample temperature were determined experimentally for three adsorbents (fullerene, astralene, and activated carbon). The difference in their adsorption abilities was shown to be related to the special features of their structures, primarily to the differences in surface area and pore volume. This conclusion was substantiated by X-ray studies of the structure of the powders. The characteristic heats of adsorption, specific surface areas, pore volumes and sizes, and characteristic energies of adsorption, which are responsible for the sorption properties of the adsorbents studied, were determined.