The influence of metal- and N-species addition in mesoporous carbons on the hydrogen adsorption capacity

SSCI-VIDE+ATARI+JCI:SBE:AAUInternational audienceMesoporous carbon (MC) and two types of N-containing mesoporous carbons (N-MC and C3N4-MC) were prepared from cost-effective materials and used for hydrogen storage both at 77 K and room temperature (RT). The mesoporous structure was confirmed by N-2 adsorption isotherm at 77 K, and the characterization of the bulk and surface properties performed by ICP analysis, TEM, XRD, and XPS. The maximum hydrogen uptakes were found on N-MC (1.1 wt% of hydrogen) at 100 bar and RT and on MC (3.07 wt% of hydrogen) at 40 bar and 77 K. Pt, Pd, and Ru noble-metal were also added to the three carbon based supports in order to verify the existence of any spillover effect due to the metals presence and evaluate the influence on hydrogen storage capacity. (C) 2015 Elsevier B.V. All rights reserved