Correlation between catalyst particle and single-walled carbon nanotube diameters

Albert Nasibulin; Peter Pikhitsa; Hua Jiang; Esko I. Kauppinen

doi:10.1016/j.carbon.2005.03.048

Correlation between catalyst particle and single-walled carbon nanotube diameters

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

VTT Technical Research Centre of Finland

Research output: Contribution to journal › Article › Scientific › peer-review

242 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 language	English
Pages (from-to)	2251-2257
Journal	Carbon
Volume	43
Issue number	11
DOIs	https://doi.org/10.1016/j.carbon.2005.03.048
Publication status	Published - 2005
MoE publication type	A1 Journal article-refereed

Keywords

nanotubes

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10.1016/j.carbon.2005.03.048

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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.",

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AU - Nasibulin, Albert

AU - Pikhitsa, Peter

AU - Jiang, Hua

AU - Kauppinen, Esko I.

PY - 2005

Y1 - 2005

N2 - 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.

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.

KW - nanotubes

U2 - 10.1016/j.carbon.2005.03.048

DO - 10.1016/j.carbon.2005.03.048

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VL - 43

SP - 2251

EP - 2257

JO - Carbon

JF - Carbon

IS - 11

ER -

Correlation between catalyst particle and single-walled carbon nanotube diameters

Abstract

Keywords

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