Combined ab initio and grand canonical Monte Carlo simulations have been performed to investigate the dependence of hydrogen storage in single-walled carbon nanotubes (SWCNTs) on both tube curvature and chirality. The ab initio calculations at the density functional level of theory can provide useful information about the nature of hydrogen adsorption in SWCNT selected sites and the binding under different curvatures and chiralities of the tube walls. Further to this, the grand canonical Monte Carlo atomistic simulation technique can model large-scale nanotube systems with different curvature and chiralities and reproduce their storage capacity by calculating the weight percentage of the adsorbed material (gravimetric density) under thermodynamic conditions of interest. The author’s results have shown that with both computational techniques, the nanotube’s curvature plays an important role in the storage process while the chirality of the tube plays none.
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14 April 2007
Research Article|
April 10 2007
Effect of curvature and chirality for hydrogen storage in single-walled carbon nanotubes: A Combined ab initio and Monte Carlo investigation
Giannis Mpourmpakis;
Giannis Mpourmpakis
Department of Chemistry,
University of Crete
, P.O. Box 1470, Heraklion, 71409 Crete, Greece
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George E. Froudakis;
George E. Froudakis
Department of Chemistry,
University of Crete
, P.O. Box 1470, Heraklion, 71409 Crete, Greece
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George P. Lithoxoos;
George P. Lithoxoos
Laboratory of Physical Chemistry, Department of Chemistry,
University of Athens
, Panepistimiopolis, 15771 Athens, Greece
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Jannis Samios
Jannis Samios
Laboratory of Physical Chemistry, Department of Chemistry,
University of Athens
, Panepistimiopolis, 15771 Athens, Greece
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Author to whom correspondence should be addressed
b)
Electronic mail: [email protected]
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Electronic mail: [email protected]
J. Chem. Phys. 126, 144704 (2007)
Article history
Received:
November 09 2006
Accepted:
February 21 2007
Citation
Giannis Mpourmpakis, George E. Froudakis, George P. Lithoxoos, Jannis Samios; Effect of curvature and chirality for hydrogen storage in single-walled carbon nanotubes: A Combined ab initio and Monte Carlo investigation. J. Chem. Phys. 14 April 2007; 126 (14): 144704. https://doi.org/10.1063/1.2717170
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