Adsorption and capillarity of nitrogen in aggregated multi-walled carbon nanotubes

被引：208

作者：

Yang, QH ^{[1
]}

Hou, PX ^{[1
]}

Bai, S ^{[1
]}

Wang, MZ ^{[1
]}

Cheng, HM ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2001年 / 345卷 / 1-2期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

D O I：

10.1016/S0009-2614(01)00848-X

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：

Pores in aggregated multi-walled carbon nanotubes (MWNTs) can be mainly divided into inner hollow cavities of smaller diameter (narrowly distributed, mainly 3.0-4.0 nm) and aggregated pores (widely distributed, 20-40 nn), formed by the interaction of isolated MWNTs. The two types of pores shall, respectively, determine nitrogen cryogenic capillarity process under different pressures. It is worth to note that ultra-strong nitrogen capillarity in the aggregated pores (590 mg N-2/g) contributes to the 78.5% of the total adsorption amount (up to 750 mg/g near to the ambient pressure), showing that the aggregated pores of the MWNTs are much more important than their inner cavities for adsorption and capillarity in some cases. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：18 / 24

页数：7

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