Inherent carbonaceous impurities on arc-discharge multiwalled carbon nanotubes and their implications for nanoscale interfaces

被引：17

作者：

An, Zhi ^{[1
]}

Furmanchuk, Al'ona ^{[1
]}

Ramachandramoorthy, Rajaprakash ^{[2
]}

Filleter, Tobin ^{[2
]}

Roenbeck, Michael R. ^{[2
]}

Espinosa, Horacio D. ^{[2
]}

Schatz, George C. ^{[1
]}

Nguyen, SonBinh T. ^{[1
]}

机构：

[1] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA

[2] Northwestern Univ, Dept Mech Engn, Evanston, IL 60208 USA

来源：

CARBON | 2014年 / 80卷

关键词：

MOLECULAR-MECHANICS; YOUNGS MODULUS; ELASTIC-MODULI; PURIFICATION; MANIPULATION; STRENGTH; ENERGY; NANOMECHANICS; FIELD;

D O I：

10.1016/j.carbon.2014.07.069

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：

This paper presents evidence that strongly adhered carbonaceous surface impurities, intrinsic impurities that accompany multiwall carbon nanotubes (MWCNTs) synthesized by arc-discharge, are a component that cannot be ignored in experiments involving single nanotubes and their interfaces with a second surface. At the interface that forms between a carbon nanotube and a graphitic surface, these impurities can significantly alter the adhesion properties of the underlying nanotube and can cause over 30% scatter in computed interaction energies, similar in magnitude to the scatter reported in experimental measurements involving individual CNTs. Also presented is high-resolution TEM evidence that commonly used purification techniques that are effective at removing larger impurity particles from as-produced arc-discharge MWCNT samples do not remove these strongly adhered carbonaceous surface impurities. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：1 / 11

页数：11

共 53 条

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