Formation of a Nanocomposite Containing Particles of C03C from a Single-Source Precursor Bound to a Silica Xerogel Host Matrix

Joseph P. Carpenter, C. M. Lukehart*, S. R. Stock, James E. Wittig

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Addition of the alkylidynetricobalt nonacarbonyl complex (HO)3SiCo3C(CO)9 to a conventional sol-gel recipe for silica xerogel formation leads to apparent covalent incorporation of this cluster into the skeletal backbone of the xerogel matrix through the heterocondensation of Si-OH groups. Subsequent thermolysis of this purple, molecularly doped xerogel in a hydrogen atmosphere at 500 °C affords a black xerogel nanocomposite containing particles of diameter 10-46 nm. TEM, EDS, XRD, and electron diffraction data indicate that the nanostructured material is predominantly C03C with some C03O4 also being present. Formation of C03C as the sole cobalt carbide substance detected demonstrates synthetic control of nanoparticle composition through the proper choice of core composition of a molecular precursor.

Original languageEnglish (US)
Pages (from-to)201-205
Number of pages5
JournalChemistry of Materials
Volume7
Issue number1
DOIs
StatePublished - Jan 1 1995

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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