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Title: Nature of the Bound States of Molecular Hydrogen in Carbon Nanohorns

Abstract

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{yields}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.

Authors:
 [1]; ;  [2];  [3]; ;  [4]
  1. ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX (United Kingdom)
  2. Instituto de Estructura de la Materia, C.S.I.C., and Dept. Electricidad y Electronica-Unidad Asociada CSIC, Facultad de Ciencia y Tecnologia, Universidad del Pais Vasco/EHU, P.O. Box 644, E-48080-Bilbao (Spain)
  3. MER Corporation, 7960 South Kolb Road, Tucson, Arizona 85706 (United States)
  4. Centre de Recherche sur la Matiere Divisee, C.N.R.S-Universite d'Orleans, 1, rue de la Ferollerie, 45071 Orleans Cedex 2 (France)
Publication Date:
OSTI Identifier:
20951400
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 98; Journal Issue: 21; Other Information: DOI: 10.1103/PhysRevLett.98.215503; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BOUND STATE; CARBON; CRYSTALS; HYDROGEN; HYDROGEN STORAGE; LINE WIDTHS; LIQUIDS; MOLECULES; NANOTUBES; NEUTRON SPECTROSCOPY

Citation Formats

Fernandez-Alonso, F., Bermejo, F. J., Cabrillo, C., Loutfy, R. O., Leon, V., and Saboungi, M. L. Nature of the Bound States of Molecular Hydrogen in Carbon Nanohorns. United States: N. p., 2007. Web. doi:10.1103/PHYSREVLETT.98.215503.
Fernandez-Alonso, F., Bermejo, F. J., Cabrillo, C., Loutfy, R. O., Leon, V., & Saboungi, M. L. Nature of the Bound States of Molecular Hydrogen in Carbon Nanohorns. United States. doi:10.1103/PHYSREVLETT.98.215503.
Fernandez-Alonso, F., Bermejo, F. J., Cabrillo, C., Loutfy, R. O., Leon, V., and Saboungi, M. L. Fri . "Nature of the Bound States of Molecular Hydrogen in Carbon Nanohorns". United States. doi:10.1103/PHYSREVLETT.98.215503.
@article{osti_20951400,
title = {Nature of the Bound States of Molecular Hydrogen in Carbon Nanohorns},
author = {Fernandez-Alonso, F. and Bermejo, F. J. and Cabrillo, C. and Loutfy, R. O. and Leon, V. and Saboungi, M. L.},
abstractNote = {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{yields}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.},
doi = {10.1103/PHYSREVLETT.98.215503},
journal = {Physical Review Letters},
number = 21,
volume = 98,
place = {United States},
year = {Fri May 25 00:00:00 EDT 2007},
month = {Fri May 25 00:00:00 EDT 2007}
}