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1 results

  • Transformation of Active Carbon to Onion-like Fullerenes Under Electron Beam Irradiation

  • Bingshe Xu, Husheng Jia, Hefeng Zhou, Hideki Ichinose, Chihiro Iwamoto
  • Journal:
    MRS Online Proceedings Library Archive / Volume 675 / 2001
    Published online by Cambridge University Press:
    21 March 2011, W7.5.1
    Print publication:
    2001

  • The transformation of an active carbon film with Pt nanoparticles to onion-like fullerenes has been in-situ investigated by a high-resolution transmission electron microscope. It was found that the onion-like fullerenes/metals polycrystalline film was formed under electron irradiation. The formation process was consisted of three steps: first, the flakes of onion-like fullerenes were induced by Pt nanoparticles; second, the flakes grew into a few ellipsoidal graphite shell; and third, a gradual reorganization of the formation of quasi-spheroid graphite shells and the bond of Pt particles was took place. It was a composite film of onion-like fullerenes and metal particles. It is suggested that the transformation mechanism involves an irradiation of electron and a catalytic effect of Pt nanoparticles, while any temperature rise due to electron irradiation seems to be negligibly small.