Purification and characterization of zeolite-supported single-walled carbon nanotubes catalytically synthesized from ethanol

Hideyuki Igarashi, Hiroto Murakami, Yoichi Murakami, Shigeo Maruyama, Naotoshi Nakashima

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

Nearly complete removal of zeolite particles and Fe/Co catalysts from raw single-walled carbon nanotubes (SWNTs) produced by chemical vapor deposition was achieved by oxidation of raw material at 240°C or 340°C and treatment with 1% aqueous solution of hydrofluoric acid. The yields of SWNTs were estimated to be ≈95% and the purities of SWNTs thus obtained were more than 95%, as characterized by thermo-gravimetric analysis. Raman spectra of the purified SWNTs were essentially identical with those of the corresponding raw samples. The raw and purified SWNTs were also characterized by EDX spectroscopy and transmission electron microscopy.

Original languageEnglish
Pages (from-to)529-532
Number of pages4
JournalChemical Physics Letters
Volume392
Issue number4-6
DOIs
Publication statusPublished - Jul 11 2004

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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