Influence of Gases on Conductivity of Onion-Like Carbon and Multiwalled Carbon Nanotubes
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Конференция |
Exotic States in Materials with Strongly Correlated Electrons : International Workshop
07-10 сент. 2007
,
Sinaia
|
| Журнал |
Journal of Optoelectronics and Advanced Materials
ISSN: 1454-4164
, E-ISSN: 1841-7132
|
| Вых. Данные |
Год: 2008,
Том: 10,
Номер: 7,
Страницы: 1749-1753
Страниц
: 5
|
| Ключевые слова |
Conductivity, Gas sensor, Multiwalled carbon nanotube, Onion-like carbon |
| Авторы |
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
|
| Организации |
| 1 |
Nikolaev Institute of Inorganic Chemistry Siberian Branch of Russian Academy of Science, Novosibirsk, Russia
|
| 2 |
Novosibirsk State University, Novosibirsk, Russia
|
| 3 |
Boreskov Institute of Catalysis Siberian Branch of Russian Academy of Science, Novosibirsk, Russia
|
|
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.