Infrared study of boron-carbon chemical bonds in boron-doped activated carbon

We report Fourier transform infrared spectroscopy (FTIR) studies of boron-doped activated carbons. The functional groups for hydrogen adsorption in these materials, the boron-related chemical bonds, are studied by comparing the activated carbon materials with and without boron doping. The activated carbon materials are prepared from corncob biomass waste feedstock through KOH activation, yielding adsorbents with […]

Increased H2 gravimetric storage capacity in truncated carbon slit pores modeled by Grand Canonical Monte Carlo

Hydrogen adsorption in slit shaped pores built up from truncated graphene fragments has been simulated using Grand Canonical Monte Carlo technique and the influence of pore wall edges on hydrogen storage by physisorption has been analyzed. We show that due to the additional gas adsorption at the pore edges the adsorbed gravimetric amount significantly increases […]

Nanospace engineering of KOH activated carbon

 

Romanos, J. et al. Nanospace engineering of KOH activated carbon. Nanotechnology 23, 015401 (2012).

This paper demonstrates that nanospace engineering of KOH activated carbon is possible by controlling the degree of carbon consumption and metallic potassium intercalation into the carbon lattice during the activation process. High specific surface areas, porosities, sub-nanometer (<1 nm) […]

Hydrogen storage in engineered carbon nanospaces

Burress, J. et al. Hydrogen storage in engineered carbon nanospaces. Nanotechnology 20, 204026 (2009).

It is shown how appropriately engineered nanoporous carbons provide materials for reversible hydrogen storage, based on physisorption, with exceptional storage capacities (~80 g H2/kg carbon, ~50 g H2/liter carbon, at 50 bar and 77 K). Nanopores generate high storage capacities […]

Enhanced hydrogen adsorption in boron substituted carbon nanospaces

Firlej, L., Roszak, S., Kuchta, B., Pfeifer, P. & Wexler, C. Enhanced hydrogen adsorption in boron substituted carbon nanospaces. The Journal of chemical physics 131, 164702 (2009).

Activated carbons are one of promising groups of materials for reversible storage of hydrogen by physisorption. However, the heat of hydrogen adsorption in such materials is relatively low, […]