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Issue 23, 2020
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Scalable growth of single-walled carbon nanotubes with a highly uniform structure

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Abstract

Here, a scalable floating catalyst chemical vapor deposition (FCCVD) method is developed for the production of single-walled carbon nanotubes (SWCNTs) with a controlled structure. For the first time, water is used as the growth promoter in the FCCVD process to modulate the growth of SWCNTs. At an optimum water concentration of ca. 115 ppm, the water-assisted FCCVD process synthesizes SWCNTs with a significantly narrow chirality distribution. In particular, the proportion of (9,8) and (8,7) semiconducting tubes was dramatically enhanced to 45% with 27% of the (9,8) tube in the end product. This is attributed to the changes in both the SWCNT diameter and the chiral angle. The experiment results and accurate quantum chemical molecular dynamics simulations show that the addition of water affects the nucleation and the size distribution of nanoparticle catalysts, thus resulting in the growth of SWCNTs with a highly uniform structure. This direct and continuous water-assisted FCCVD provides the possibility for the mass production of high-quality SWCNTs with a controlled structure.

Graphical abstract: Scalable growth of single-walled carbon nanotubes with a highly uniform structure

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Article information


Submitted
08 Apr 2020
Accepted
12 May 2020
First published
13 May 2020

This article is Open Access

Nanoscale, 2020,12, 12263-12267
Article type
Communication

Scalable growth of single-walled carbon nanotubes with a highly uniform structure

A. Hussain, E. Ding, B. Mclean, K. Mustonen, S. Ahmad, M. Tavakkoli, A. J. Page, Q. Zhang, J. Kotakoski and E. I. Kauppinen, Nanoscale, 2020, 12, 12263
DOI: 10.1039/D0NR01919D

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