Growth of multi-walled carbon nanotubes on mechanical alloying-derived Al2O3-ni nanocomposite powder

B. Liu, Z. Zhong, J. Ding*, J. Lin, Y. Shi, L. Si

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Mechanical alloying was employed to produce the nanocomposite Al2O3-Ni. It was found that the mechanical alloying of a mixture of NiO and α-Al2O3 generated a highly disordered structure. Reduction under a hydrogen atmosphere led to formation of nano-sized Ni crystallites in the Al2O3 matrix. Relatively high BET specific surface areas indicate that the sub-micron nanocomposite particles have a porous structure. In comparison with the co-precipitated powder, the mechanical alloying-derived powder shows smaller particle/agglomerate size and much higher Ni reducibility. Multi-walled carbon nanotubes with a high production yield were successfully synthesized by using the mechanical alloying-derived nanocomposite as the catalyst.

Original languageEnglish
Pages (from-to)2523-2528
Number of pages6
JournalJournal of Materials Chemistry
Volume11
Issue number10
DOIs
StatePublished - 2001
Externally publishedYes

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