Preparation of few-layer graphene by the hydroxylation of potassium-graphite intercalation compound

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  • Wada Takuya
    Department of Applied Chemistry, Faculty of Engineering, Oita University High Strength Polymer Laboratory, High Performance Plastics Company, Sekisui Chemical Co., Ltd.
  • Yasutake Takuya
    Department of Applied Chemistry, Faculty of Engineering, Oita University
  • Nakasuga Akira
    High Strength Polymer Laboratory, High Performance Plastics Company, Sekisui Chemical Co., Ltd.
  • Kinumoto Taro
    Department of Applied Chemistry, Faculty of Engineering, Oita University
  • Tumura Tomoki
    Department of Applied Chemistry, Faculty of Engineering, Oita University
  • Toyoda Masahiro
    Department of Applied Chemistry, Faculty of Engineering, Oita University

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Other Title
  • カリウムGICの水酸化処理によるグラフェンへの剥離
  • カリウム GIC ノ スイサンカ ショリ ニ ヨル グラフェン エ ノ ハクリ

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Abstract

Few-layer graphene was prepared from the potassium-graphite intercalation compound (KC8) by hydroxylation. In an oxidative atmosphere, KC8 decomposes from its initial structural stage to a second or third stage. However, when KC8 was hydroxylated by dropping a small amount of water onto it in a nonoxidative atmosphere, the KC8 exfoliated with a disruption of the stage structure and agglomerated graphene was obtained. Sonication of this agglomerated graphene in water yielded few-layer graphene. It was found that dropping small quantities of water onto KC8 is effective for achieving graphene with just a few layers.

Journal

  • TANSO

    TANSO 2014 (262), 59-62, 2014

    THE CARBON SOCIETY OF JAPAN

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