Purification and characterization of single-walled carbon nanotubes

H. Y. Kim, W. B. Choi, N. S. Lee, D. S. Chung, J. H. Kang, I. T. Han, J. M. Kim, Myeong Hee Moon, J. S. Kim

Research output: Contribution to journalConference article

4 Citations (Scopus)

Abstract

Single-walled carbon nanotubes (SWNTs) were purified and cut into short length by the liquid phase oxidation using the typical oxidants such as HNO3, H2SO4 and their mixture. The SWNT-acid solutions were refluxed at high temperature, filtered on poly tetra-fluoro ethylene (PTFE) filter paper, rinsed with distilled water, and then dried at room temperature. In order to find optimum purifying condition, acid solutions were made by mixing nitric/sulfuric acid by the different volume ratio. The reaction time was also varied from 1h to 6h. Through this method, purified SWNTs with the length of less than 2μm were successfully obtained, which was confirmed by scanning electron microscopy (SEM). From transmission electron microscopy (TEM) analysis, it was verified that SWNTs were purified with little damage on surface and metal catalysts were efficiently removed when sulfuric acid was mixed, which was also confirmed by energy disperse spectrum analysis (EDS). Moreover, size distribution of the purified SWNTs was characterized with Field Flow-Fractionation (FFF) method.

Original languageEnglish
Pages (from-to)123-127
Number of pages5
JournalMaterials Research Society Symposium - Proceedings
Volume593
Publication statusPublished - 2000 Dec 3
EventSymposium-Amorphous and Nanoestructured Carbon - Boston, MA, USA
Duration: 1999 Nov 291999 Dec 2

Fingerprint

Single-walled carbon nanotubes (SWCN)
purification
Purification
carbon nanotubes
sulfuric acid
Sulfuric acid
acids
Acids
nitric acid
Nitric acid
Fractionation
Oxidants
reaction time
fractionation
Spectrum analysis
spectrum analysis
Flow fields
flow distribution
Ethylene
liquid phases

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Kim, H. Y., Choi, W. B., Lee, N. S., Chung, D. S., Kang, J. H., Han, I. T., ... Kim, J. S. (2000). Purification and characterization of single-walled carbon nanotubes. Materials Research Society Symposium - Proceedings, 593, 123-127.
Kim, H. Y. ; Choi, W. B. ; Lee, N. S. ; Chung, D. S. ; Kang, J. H. ; Han, I. T. ; Kim, J. M. ; Moon, Myeong Hee ; Kim, J. S. / Purification and characterization of single-walled carbon nanotubes. In: Materials Research Society Symposium - Proceedings. 2000 ; Vol. 593. pp. 123-127.
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Kim, HY, Choi, WB, Lee, NS, Chung, DS, Kang, JH, Han, IT, Kim, JM, Moon, MH & Kim, JS 2000, 'Purification and characterization of single-walled carbon nanotubes', Materials Research Society Symposium - Proceedings, vol. 593, pp. 123-127.

Purification and characterization of single-walled carbon nanotubes. / Kim, H. Y.; Choi, W. B.; Lee, N. S.; Chung, D. S.; Kang, J. H.; Han, I. T.; Kim, J. M.; Moon, Myeong Hee; Kim, J. S.

In: Materials Research Society Symposium - Proceedings, Vol. 593, 03.12.2000, p. 123-127.

Research output: Contribution to journalConference article

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AU - Choi, W. B.

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AU - Chung, D. S.

AU - Kang, J. H.

AU - Han, I. T.

AU - Kim, J. M.

AU - Moon, Myeong Hee

AU - Kim, J. S.

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N2 - Single-walled carbon nanotubes (SWNTs) were purified and cut into short length by the liquid phase oxidation using the typical oxidants such as HNO3, H2SO4 and their mixture. The SWNT-acid solutions were refluxed at high temperature, filtered on poly tetra-fluoro ethylene (PTFE) filter paper, rinsed with distilled water, and then dried at room temperature. In order to find optimum purifying condition, acid solutions were made by mixing nitric/sulfuric acid by the different volume ratio. The reaction time was also varied from 1h to 6h. Through this method, purified SWNTs with the length of less than 2μm were successfully obtained, which was confirmed by scanning electron microscopy (SEM). From transmission electron microscopy (TEM) analysis, it was verified that SWNTs were purified with little damage on surface and metal catalysts were efficiently removed when sulfuric acid was mixed, which was also confirmed by energy disperse spectrum analysis (EDS). Moreover, size distribution of the purified SWNTs was characterized with Field Flow-Fractionation (FFF) method.

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Kim HY, Choi WB, Lee NS, Chung DS, Kang JH, Han IT et al. Purification and characterization of single-walled carbon nanotubes. Materials Research Society Symposium - Proceedings. 2000 Dec 3;593:123-127.