Hydrothermally synthesised Fe2O3 nanoparticles as catalyst precursors for the CVD production of graphitic nanofibres

H. K. Edwards, E. Evans, S. McCaldin, P. Blood, D. H. Gregory, M. Poliakoff, E. Lester, G. S. Walker, P. D. Brown

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Graphitic nanofibres (GNFs) have been grown by chemical vapour deposition at 500°C and 700°C, using 6 nm and 20 nm particles of Fe 2O3 produced by supercritical water hydrothermal synthesis (scWHS). The morphologies of catalyst and GNFs have been examined using the combined techniques of conventional transmission electron microscopy, high resolution electron microscopy, selected area electron diffraction and powder X-ray diffraction. GNF production varied from well ordered nanofibres with an average diameter of 100 nm, to very large, disordered fibres with diameters ranging from 500 nm to ∼2 νm. Larger fibres were found to have a compound structure composed of discreet domains of graphite and multiwall nanotubes. 20 nm particles produced by scWHS were associated with significant increases in the yield of GNFs as compared with traditional catalyst precipitation routes.

Original languageEnglish
Pages (from-to)195-198
Number of pages4
JournalJournal of Physics: Conference Series
Volume26
Issue number1
DOIs
Publication statusPublished - Jan 1 2006

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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