Incremental variation in the number of carbon nanotube walls with growth temperature

Prasantha R. Mudimela (Corresponding Author), Albert Nasibulin, Hua Jiang, Toma Susi, Delphine Chassaing, Esko I. Kauppinen (Corresponding Author)

Research output: Contribution to journalArticleScientificpeer-review

19 Citations (Scopus)

Abstract

Investigations of carbon nanotube (CNT) synthesis were carried out in a chemical vapor deposition reactor using CO as the carbon source, Fe as the catalyst material, and SiO2 as the catalyst support. This allowed us to synthesize CNTs in a wide range of diameters from 1.4 to 12 nm and lengths from 0.5 to 350 μm. An incremental variation in the number of CNT walls, increasing from one to four, was found in the temperature range of 590−1070 °C. The increase in CNT wall number and CNT length with temperature can be explained by enhancement of carbon solubility and diffusivity. CO2 was found to be a very important additive for the activation of catalyst particles and subsequently for the successful synthesis of CNTs. The prevention of cementite particle formation and etching amorphous carbon were also attributed to CO2.
Original languageEnglish
Pages (from-to)2212-2218
Number of pages7
JournalJournal of Physical Chemistry C
Volume113
Issue number6
DOIs
Publication statusPublished - 2009
MoE publication typeA1 Journal article-refereed

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Carbon Nanotubes
Growth temperature
Carbon nanotubes
carbon nanotubes
Carbon
catalysts
Catalysts
temperature
carbon
Amorphous carbon
Carbon Monoxide
Catalyst supports
cementite
Chemical vapor deposition
Etching
Solubility
Chemical activation
synthesis
Temperature
diffusivity

Cite this

Mudimela, P. R., Nasibulin, A., Jiang, H., Susi, T., Chassaing, D., & Kauppinen, E. I. (2009). Incremental variation in the number of carbon nanotube walls with growth temperature. Journal of Physical Chemistry C, 113(6), 2212-2218. https://doi.org/10.1021/jp808316p
Mudimela, Prasantha R. ; Nasibulin, Albert ; Jiang, Hua ; Susi, Toma ; Chassaing, Delphine ; Kauppinen, Esko I. / Incremental variation in the number of carbon nanotube walls with growth temperature. In: Journal of Physical Chemistry C. 2009 ; Vol. 113, No. 6. pp. 2212-2218.
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Mudimela, PR, Nasibulin, A, Jiang, H, Susi, T, Chassaing, D & Kauppinen, EI 2009, 'Incremental variation in the number of carbon nanotube walls with growth temperature', Journal of Physical Chemistry C, vol. 113, no. 6, pp. 2212-2218. https://doi.org/10.1021/jp808316p

Incremental variation in the number of carbon nanotube walls with growth temperature. / Mudimela, Prasantha R. (Corresponding Author); Nasibulin, Albert; Jiang, Hua; Susi, Toma; Chassaing, Delphine; Kauppinen, Esko I. (Corresponding Author).

In: Journal of Physical Chemistry C, Vol. 113, No. 6, 2009, p. 2212-2218.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Incremental variation in the number of carbon nanotube walls with growth temperature

AU - Mudimela, Prasantha R.

AU - Nasibulin, Albert

AU - Jiang, Hua

AU - Susi, Toma

AU - Chassaing, Delphine

AU - Kauppinen, Esko I.

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AB - Investigations of carbon nanotube (CNT) synthesis were carried out in a chemical vapor deposition reactor using CO as the carbon source, Fe as the catalyst material, and SiO2 as the catalyst support. This allowed us to synthesize CNTs in a wide range of diameters from 1.4 to 12 nm and lengths from 0.5 to 350 μm. An incremental variation in the number of CNT walls, increasing from one to four, was found in the temperature range of 590−1070 °C. The increase in CNT wall number and CNT length with temperature can be explained by enhancement of carbon solubility and diffusivity. CO2 was found to be a very important additive for the activation of catalyst particles and subsequently for the successful synthesis of CNTs. The prevention of cementite particle formation and etching amorphous carbon were also attributed to CO2.

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SN - 1932-7447

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