Synthesis and characterization of B-substituted nanoporous carbons for hydrogen adsorption.
Résumé
Here we explored the possibility to prepare boron-substituted nanoporous carbons, cheap, light and save material that was
supposed [2,3] to reversibly store hydrogen by physisorption at room temperatures and moderated pressure (< 120 bar). We
showed that electric arc discharge between graphite electrodes may be optimized to produce graphitized structures with a
variety of graphene fragment sizes, forms, and interconnections between them. It also allows to introduce boron heteroatom
into graphite-like structure. The as-synthetized material shows the hydrogen binding energy twice as high as unsubstituted
carbons, but requires post-treatment (activation) as the its surface is low (~200 m2/g).