Investigations of hydrogen adsorption in different carbon nanomaterials obtained from carbon-helium plasma were carried out. Five types of samples were investigated: fullerene-containing soot collected from chamber walls and from chamber outlet, fullerene mixture, thermolysis residue, and graphitized in plasma Al2 O 3. It was found that the soot from chamber outlet containing more than 40% of single-wall carbon nanotubes (SWCNT) was the best hydrogen adsorbent. This sample adsorbed 0.92%wt. of hydrogen at 77K and 107 Pa.