Gas adsorption on heterogeneous single-walled carbon nanotube bundles

被引：162

作者：

Shi, W ^{[1
]}

Johnson, JK

机构：

[1] Univ Pittsburgh, Dept Chem & Petr Engn, Pittsburgh, PA 15261 USA

[2] Natl Energy Technol Lab, Pittsburgh, PA 15236 USA

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 01期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.91.015504

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Optimization of carbon nanotube bundles containing a distribution of nanotube diameters always gives structures with packing defects that form relatively large interstitial channels. Experimental data for CH4, Ar, and Xe adsorption are compared with simulations. Low coverage experimental isosteric heats are in excellent agreement with simulations of gases adsorbing into interstitial channels of defective nanotube bundles, whereas adsorption onto perfect bundles does not agree with experiments. Thus, an accurate description of adsorption on nanotube bundles must account for interstitial adsorption.

引用

页数：4

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