H2 binding energy in disordered boron-substituted graphitic carbon was investigated by nuclear magnetic resonance equipped with in situ high pressure hydrogen loading. On the basis of selective adsorption isotherm measurements, a significantly enhanced H2 binding energy of 11.4 kJ/mol was observed in such boronsubstituted carbon, consistent with theoretical predictions. In support of the observed high binding energy at room temperature, H2 diffusion is shown to be slow at 100 K, preventing H2 from accessing the nanopores at low temperatures.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films