Effects of mechanochemical treatment of Ni-Al(OH)3 on the preparation of carbon nanomaterials by thermal CVD

Hyung Kyun Yu, Jung Sik Kim, Seong Geun Oh, Hojin Ryu

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Carbon nanomaterials have been prepared by the thermal chemical vapor deposition (CVD) method in which C2H2 gas was deposited on the Ni-Al(OH)3 mixture pretreated by mechanochemical treatment with a high-energy mill. As the duration time of grinding for the Ni-Al(OH)3 mixture by the mixer mill is increased, amorphous Al(OH)3 and smaller Ni particles agglomerated into spheres. With unground and 120-min ground mixture of Ni-Al(OH)3, carbon nanomaterials were prepared at 500 and 600°C. As a result, carbon nanomaterials prepared on a ground mixture have more uniform morphologies than those of the unground mixture. The characterization of Ni-Al(OH)3 mixture and as-prepared carbon samples was done by X-ray diffractometer (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), Raman spectroscopy and current-voltage (I-V) measurement.

Original languageEnglish
Pages (from-to)30-36
Number of pages7
JournalPowder Technology
Volume129
Issue number1-3
DOIs
StatePublished - 8 Jan 2003

Keywords

  • CVD
  • Carbon nanomaterials
  • Field emission
  • Mechanochemical treatment

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