CO2 adsorption in single-walled carbon nanotubes

被引:301
作者
Cinke, M [1 ]
Li, J [1 ]
Bauschlicher, CW [1 ]
Ricca, A [1 ]
Meyyappan, M [1 ]
机构
[1] NASA, Ames Res Ctr, Ctr Nanotechnol, Moffett Field, CA 94035 USA
基金
美国国家航空航天局;
关键词
D O I
10.1016/S0009-2614(03)01124-2
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
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.
引用
收藏
页码:761 / 766
页数:6
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