Journal
CHEMICAL PHYSICS LETTERS
Volume 376, Issue 5-6, Pages 761-766Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0009-2614(03)01124-2
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Adsorption of CO2 on purified single-walled carbon nanotubes (SWNTs) has been studied in the temperature range of 0-200 degreesC and found to be mainly a physisorption process. The SWNTs adsorb nearly twice the volume of CO, compared to activated carbon. The experimental results yield a CO, heat of adsorption of 2303 J/mol (0.024 eV) in SWNTs. Our computational study yields a similar binding energy and shows that the CO2 is physisorbed side-on to the nanotube. (C) 2003 Elsevier B.V. All rights reserved.
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