Structural alterations of carbon particles in saturated water vapor

Chihiro Kaito, Masayuki Shintaku, Ryuta Sakao, Akihito Kumamoto, Midori Saito, Yuki Kimura, Shinsuke Ohyagi, Shigeru Morikawa, Hitoshi Suzuki

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

High-resolution transmission electron microscopy (HRTEM) of carbon particles has been carried out at 80 °C in saturated water vapor, to evaluate any structural alterations. Amorphous particles or microcrystallites of carbon based on the graphitic structure were altered to more stable graphitic structures such as ribbons or onion-like structures. The stable graphitic structure was altered again to the amorphous structure. Results are interpreted in terms of the oxidation of carbon particles in air. The differences in alterations among carbon particles, Pt clusters on carbon particles, and Pt clusters in carbon particles are presented on the basis of HRTEM images.

Original languageEnglish
Pages (from-to)6588-6591
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume47
Issue number8 PART 1
DOIs
Publication statusPublished - 2008 Aug 8

Keywords

  • Amorphous
  • Carbon particle
  • Catalyst
  • Graphitization
  • Heat treatment
  • Transmission electron microscopy

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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  • Cite this

    Kaito, C., Shintaku, M., Sakao, R., Kumamoto, A., Saito, M., Kimura, Y., Ohyagi, S., Morikawa, S., & Suzuki, H. (2008). Structural alterations of carbon particles in saturated water vapor. Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, 47(8 PART 1), 6588-6591. https://doi.org/10.1143/JJAP.47.6588