A supercritical-fluid method for growing carbon nanotubes

Zhonglai Li; Jana Andzane; Donats Erts; Joseph M. Tobin; Kaixue Wang; Michael A. Morris; Gary Attard; Justin D. Holmes

doi:10.1002/adma.200602483

A supercritical-fluid method for growing carbon nanotubes

Zhonglai Li
, Jana Andzane
, Donats Erts
, Joseph M. Tobin
, Kaixue Wang
, Michael A. Morris
, Gary Attard
, Justin D. Holmes

School of Chemistry

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

Abstract

A continuous-flow supercritical-fluid (SCF) method for growing carbon nanotubes (CNT) with high selectivity and in high yield was reported. The CNT/catalyst composites images are synthesized at 750°C and 5.17 MPa and the length of various nanotubes produced are found to be greater than 10μm. Distorted CNT with rough surfaces are generated at a pressure of 10.24 MPa due to the difference between the high decomposition rate of CO and the growth rate of CNT formation. The field-emission properties of the individual MCNTs grown at 750°C and 5.17 MPa shows that the emission initiates at local fields of 2.5-5.0 V nm^-1 and 1.5-4.0 V nm^-1. SCF grown nanotubes also exhibit a better failure stability compared with the Chemical Vapor Deposition (CVD)-grown nanotubes.

Original language	English
Pages (from-to)	3043-3046
Number of pages	4
Journal	Advanced Materials
Volume	19
Issue number	19
DOIs	https://doi.org/10.1002/adma.200602483
Publication status	Published - 5 Oct 2007

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10.1002/adma.200602483

https://hdl.handle.net/10468/8145Licence: CC BY-NC-ND

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title = "A supercritical-fluid method for growing carbon nanotubes",

abstract = "A continuous-flow supercritical-fluid (SCF) method for growing carbon nanotubes (CNT) with high selectivity and in high yield was reported. The CNT/catalyst composites images are synthesized at 750°C and 5.17 MPa and the length of various nanotubes produced are found to be greater than 10μm. Distorted CNT with rough surfaces are generated at a pressure of 10.24 MPa due to the difference between the high decomposition rate of CO and the growth rate of CNT formation. The field-emission properties of the individual MCNTs grown at 750°C and 5.17 MPa shows that the emission initiates at local fields of 2.5-5.0 V nm-1 and 1.5-4.0 V nm-1. SCF grown nanotubes also exhibit a better failure stability compared with the Chemical Vapor Deposition (CVD)-grown nanotubes.",

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AU - Li, Zhonglai

AU - Andzane, Jana

AU - Erts, Donats

AU - Tobin, Joseph M.

AU - Wang, Kaixue

AU - Morris, Michael A.

AU - Attard, Gary

AU - Holmes, Justin D.

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AB - A continuous-flow supercritical-fluid (SCF) method for growing carbon nanotubes (CNT) with high selectivity and in high yield was reported. The CNT/catalyst composites images are synthesized at 750°C and 5.17 MPa and the length of various nanotubes produced are found to be greater than 10μm. Distorted CNT with rough surfaces are generated at a pressure of 10.24 MPa due to the difference between the high decomposition rate of CO and the growth rate of CNT formation. The field-emission properties of the individual MCNTs grown at 750°C and 5.17 MPa shows that the emission initiates at local fields of 2.5-5.0 V nm-1 and 1.5-4.0 V nm-1. SCF grown nanotubes also exhibit a better failure stability compared with the Chemical Vapor Deposition (CVD)-grown nanotubes.

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A supercritical-fluid method for growing carbon nanotubes

Abstract

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