Low pressure synthesis of single-walled carbon nanotubes by arc discharge

Young Soo Park, Keun Soo Kim, Hee Jin Jeong, Won Seok Kim, Jeong Mi Moon, Kay Hyeok An, Dong Jae Bae, Young Seak Lee, Gyeong Su Park, Young Hee Lee

Research output: Contribution to journalArticlepeer-review

81 Scopus citations

Abstract

High yield of single-walled carbon nanotubes (SWCNTs) has been synthesized by dc arc discharge under low pressure of helium gas with a small amount of a mixture of nickel and iron powders. The highest yield of carbon nanotubes (CNTs) was obtained at low pressure of 100 Torr with 5 wt.% of metal mixture, in good contrast with the previous works. In addition, we introduced sulfur promoter to improve the yield, which gave rise to again the highest yield at low gas pressure. This was attributed to the higher arching temperature at lower gas pressure, facilitating an efficient formation of CNTs.

Original languageEnglish
Pages (from-to)245-251
Number of pages7
JournalSynthetic Metals
Volume126
Issue number2-3
DOIs
StatePublished - 14 Feb 2002

Keywords

  • Arc discharge
  • Carbon nanotubes
  • Low pressure

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