Highly crystalline graphite-like carbon from wood via low-temperature catalytic graphitization

Yuta Nakayasu, Yasuto Goto, Yuto Katsuyama, Takashi Itoh, Masaru Watanabe

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


In this study, we investigated the synthesis of wood-sawdust-derived high-crystalline graphite-like carbon. The sawdust was first impregnated with Fe and semi-carbonized by a hydrothermal treatment (HT) at 250°C, followed by the second carbonization under N2 atmosphere and acid washing. For an iron-to-sawdust weight ratio of 4:10, graphite-like carbon was synthesized at a very low temperature of 850°C. This carbon has an average interlayer distance and crystallite size (d002: 0.337 nm, La: 35.8 nm, and Lc: 56.1 nm) comparable to those of commercial graphite. The large size of the Fe crystal particles facilitates the development of a stacked structure of carbon sheets. The HT with Fe-impregnated sawdust generates larger iron oxide particles than simple semi-carbonization with Fe-impregnated sawdust under N2 atmosphere at 250°C, facilitating the development of more crystalline graphite-like carbon. It was also found that the crystallinity of the graphitic carbon obtained after second carbonization may be controlled by the amount and particle size of the added Fe.

Original languageEnglish
Article number100190
JournalCarbon Trends
Publication statusPublished - 2022 Jul


  • Biomass
  • Carbon
  • Catalyst
  • Graphite
  • Hydrothermal
  • LIB

ASJC Scopus subject areas

  • Chemistry (miscellaneous)
  • Materials Science (miscellaneous)
  • Materials Chemistry


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