Shock-compression of C-N precursors for possible synthesis of β-C3N4

Charles Collins, Naresh Thadhani, Zafar Iqbal

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

We report on the possible synthesis of the theoretically predicted β-phase of carbon nitride (C3N4) by shock compression of sodium dicyanamide mixed with sodium azide and carbon tetra-iodide. Shock-compression experiments were performed on starting precursor blended with ∼95 wt.% Cu powder, statically pressed in steel capsules. The capsules were impacted under conditions of constant shock amplitude, but varying shock-pulse duration. TEM analysis of the recovered shock-compressed residue showed crystallites of a cubic C-N compound dispersed in an amorphous matrix, with overall yield of the crystalline phase being a function of the shock-pulse duration. Parallel-detection electron energy loss spectroscopy of the nitrogen-containing crystallites revealed diamond-like sp3 bonding. Infra-red spectroscopy indicated absorption lines in regions calculated to be appropriate for β-C3N4.

Original languageEnglish (US)
Pages (from-to)1175-1181
Number of pages7
JournalCarbon
Volume39
Issue number8
DOIs
StatePublished - Jul 2001

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)

Keywords

  • C. Transmission electron microscopy
  • Electron energy loss spectroscopy
  • Infrared spectroscopy

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