Production and structural characterization of carbon soot with narrow UV absorption feature

Yuki Kimura, Takeshi Sato, Chihiro Kaito

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


In the present study, by a simple method, carbon soot with a narrow absorption features at around 220 nm was produced by pyrolysis of methane gas at a hot (1400-2800 °C) filament. A detailed correlation between the structure and the optical spectra of carbon soot was carried out using a high-resolution transmission electron microscope. It appears that the origin of the narrow absorption peak is an onion-like graphitic structure. Interestingly, we found that the absorption peak position and the size of the soot can be controlled by the production temperature. The absorption peak is located at 217.5 nm, i.e., at the position of an intense interstellar absorption, when the onion structure has about 5 nm diameter. Infrared spectroscopy was applied to further elucidate the chemical composition of the obtained soot.

Original languageEnglish
Pages (from-to)33-38
Number of pages6
Issue number1
Publication statusPublished - 2004 Jan 1


  • A. Graphitic carbon
  • C. Transmission electron microscopy
  • D. Optical properties
  • Particle size
  • Soot

ASJC Scopus subject areas

  • Materials Chemistry


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