Influence of gases on conductivity of on onion-like carbon and multiwalled carbon nanotubes

被引：0
|
作者：
Romanenko, A. I. [1 ,2 ]
Anikeeva, O. B. [1 ,2 ]
Kuznetsov, V. L. [2 ,3 ]
Buryakov, T. I. [1 ,2 ]
Tkachev, E. N. [1 ,2 ]
Moseenkov, S. I. [2 ,3 ]
Usoltseva, A. N. [2 ,3 ]
机构：
[1] Russian Acad Sci, Siberian Branch, Nikolaev Inst Inorgan Chem, Novosibirsk, Russia
[2] Novosibirsk State Univ, Novosibirsk 630090, Russia
[3] Russian Acad Sci, Siberian Branch, Boreskov Inst Catalysis, Novosibirsk, Russia
来源：
JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS | 2008年 / 10卷 / 07期
关键词：
onion-like carbon; multiwalled carbon nanotube; conductivity; gas sensor;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Temperature dependences of the conductivity of onion-like carbon (OLC) and catalytic multiwalled carbon nanotubes (MWNTs) were measured in various gas environments: helium, hydrogen, oxygen, air, methane. We have found that in the vicinity of the melting and vaporization temperatures of oxygen and methane the conductivity sharply decreases for MWNTs (by 2-12%) and for OLC (by 4-12%). The observed reversible changes of the conductivity of investigated samples are discussed in the terms of processes of gases adsorption-desorption on the surface of nanotubes and OLC and breakup-recovery of-contacts between nanotubes and particles of OLC as a result of melting and vaporization of environment gases.
引用
收藏
页码：1749 / 1753
页数：5
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