Combinatorial Technique Applied to the Synthesis of Carbon Nanotubes.

  • Hwang Sun-Kyu
    Electrical and Computer Engineering Division, Department of Chemical Engineering, Pohang University of Science and Technology, San 31, Hyoja-Dong, Nam-Ku, Pohang, Kyungbuk 790-784, Korea
  • Lee Ki-Do
    Electrical and Computer Engineering Division, Department of Chemical Engineering, Pohang University of Science and Technology, San 31, Hyoja-Dong, Nam-Ku, Pohang, Kyungbuk 790-784, Korea
  • Lee Kun-Hong
    Electrical and Computer Engineering Division, Department of Chemical Engineering, Pohang University of Science and Technology, San 31, Hyoja-Dong, Nam-Ku, Pohang, Kyungbuk 790-784, Korea

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説明

A combinatorial technique was used to determine the optimum catalyst combination for the efficient synthesis of carbon nanotubes (CNTs). The morphology, length and yield of CNTs greatly differ depending on the catalyst combinations. Among 20 different compositions of mixed catalysts, CNTs of good structure were obtained when the volume ratios of the three precursor solutions---Co(NO3)2, Ni(NO3)2 and Fe(NO3)3---were 4:2:4 (island #7) and 1:5:4 (island #18).

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