Correlation between catalyst particle and single-walled carbon nanotube diameters

Albert Nasibulin, Peter Pikhitsa, Hua Jiang, Esko I. Kauppinen (Corresponding Author)

Research output: Contribution to journalArticleScientificpeer-review

193 Citations (Scopus)

Abstract

Single-walled carbon nanotubes (CNTs) were synthesised at different conditions by a novel aerosol method based on the introduction of pre-formed iron catalyst particles into conditions leading to CNT formation. The results of statistical measurements of individual CNT dimensions based on high-resolution TEM images showed the effects of the residence time and temperature in the reactor. The ratio between catalyst particle and CNT diameters was close to 1.6 and independent of the experimental conditions, thus revealing an astonishing “universality” in the growth process. A proposed geometric model of heptagon defect formation, which initiates and maintains the CNT growth, allowed us to theoretically explain the phenomenon.
Original languageEnglish
Pages (from-to)2251 - 2257
Number of pages7
JournalCarbon
Volume43
Issue number11
DOIs
Publication statusPublished - 2005
MoE publication typeA1 Journal article-refereed

Fingerprint

Carbon Nanotubes
Single-walled carbon nanotubes (SWCN)
Carbon nanotubes
Catalysts
Aerosols
Iron
Transmission electron microscopy
Defects
Temperature

Keywords

  • nanotubes

Cite this

Nasibulin, A., Pikhitsa, P., Jiang, H., & Kauppinen, E. I. (2005). Correlation between catalyst particle and single-walled carbon nanotube diameters. Carbon, 43(11), 2251 - 2257. https://doi.org/10.1016/j.carbon.2005.03.048
Nasibulin, Albert ; Pikhitsa, Peter ; Jiang, Hua ; Kauppinen, Esko I. / Correlation between catalyst particle and single-walled carbon nanotube diameters. In: Carbon. 2005 ; Vol. 43, No. 11. pp. 2251 - 2257.
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Nasibulin, A, Pikhitsa, P, Jiang, H & Kauppinen, EI 2005, 'Correlation between catalyst particle and single-walled carbon nanotube diameters', Carbon, vol. 43, no. 11, pp. 2251 - 2257. https://doi.org/10.1016/j.carbon.2005.03.048

Correlation between catalyst particle and single-walled carbon nanotube diameters. / Nasibulin, Albert; Pikhitsa, Peter; Jiang, Hua; Kauppinen, Esko I. (Corresponding Author).

In: Carbon, Vol. 43, No. 11, 2005, p. 2251 - 2257.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Pikhitsa, Peter

AU - Jiang, Hua

AU - Kauppinen, Esko I.

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AB - Single-walled carbon nanotubes (CNTs) were synthesised at different conditions by a novel aerosol method based on the introduction of pre-formed iron catalyst particles into conditions leading to CNT formation. The results of statistical measurements of individual CNT dimensions based on high-resolution TEM images showed the effects of the residence time and temperature in the reactor. The ratio between catalyst particle and CNT diameters was close to 1.6 and independent of the experimental conditions, thus revealing an astonishing “universality” in the growth process. A proposed geometric model of heptagon defect formation, which initiates and maintains the CNT growth, allowed us to theoretically explain the phenomenon.

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