Synthesis of high quality single-walled carbon nanotubes with purity enhancement and diameter control by liquid precursor Ar-H2 plasma spraying

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DOIResolve DOI: http://doi.org/10.1016/j.cej.2014.03.117
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TypeArticle
Journal titleChemical Engineering Journal
ISSN1385-8947
Volume250
Pages331341; # of pages: 11
SubjectAmorphous carbon; Feedstocks; Liquids; Mixtures; Organometallics; Plasma spraying; Plasmas; Single-walled carbon nanotubes (SWCN); Thermal spraying; Diameter control; Diameter distributions; Induction plasma; Induction thermal plasma; Large scale synthesis; Liquid precursors; Scientific researches; Single-walled carbon nanotube (SWCNTs); Process control
AbstractAs usage of carbon nanotubes continues to increase in both scientific research and practical applications, there has been a growing interest in the large-scale synthesis of those materials with high quality and high purity. Here we report a new plasma process developed for the large-scale synthesis of high quality single-walled carbon nanotubes (SWCNTs). An induction thermal plasma with a liquid precursor spraying technique was employed for an effective synthesis of SWCNTs from a mixture of toluene and ferrocene. It has been successfully demonstrated in this new process that high quality SWCNTs can be synthesized continuously with a reasonably high-purity, the structural quality of the materials produced being comparable to those of SWCNTs produced from the laser vaporization process. The high temperature of the plasma, over 4000. K, seems to be responsible for the production of high quality SWCNTs and the rapid treatment of a large amount of feedstock, whereas the hydrogen plasma contributes to the purity enhancement by selective etching of amorphous carbon. It is also found that the diameter distribution of SWCNTs can be controlled effectively by varying the sulfur content in the feedstock mixture, which is very promising for many advanced applications of SWCNTs such as SWCNT-based electronics. © 2014.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); Security and Disruptive Technologies (SDT-TSR)
Peer reviewedYes
NPARC number21272204
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Record identifierae3d88c9-9186-4284-8baa-c4118689e7d0
Record created2014-07-23
Record modified2016-05-09
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