2024-03-29T13:38:18Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/26932016-02-16T02:37:54Zcom_10261_135com_10261_4col_10261_388
http://hdl.handle.net/10261/2693
10.1103/PhysRevLett.98.215503
1335
Nature of the bound states of molecular hydrogen in carbon nanohorns
American Physical Society
2007
preprint
Fernández-Alonso, Félix
Bermejo, Francisco Javier
Cabrillo García, Carlos
Loutfy, Raouf O.
Leon, Vincent
Saboungi, Marie Louise
Nanoscale materials
Neutron diffraction and scattering
Diffusion and thermal diffusion in liquids
Chemisorption/physisorption: adsorbates on surfaces
2007-06-04
The effects of confining molecular hydrogen within carbon nanohorns are studied via high-resolution quasielastic and inelastic neutron spectroscopies. Both sets of data are remarkably different from those obtained in bulk samples in the liquid and crystalline states. At temperatures where bulk hydrogen is liquid, the spectra of the confined sample show an elastic component indicating a significant proportion of immobile molecules as well as distinctly narrower quasielastic line widths and a strong distortion of the line shape of the para - ortho rotational transition. The results show that hydrogen interacts far more strongly with such carbonous structures than it does to carbon nanotubes, suggesting that nanohorns and related nanostructures may offer significantly better prospects as lightweight media for hydrogen storage applications.
openAccess
arXiv:0706.0428v1
215503