Journal article
Synthesis of Nitrogen-Rich Carbon Nitride Networks from an Energetic Molecular Azide Precursor
Chemistry of materials, Vol.12(12), pp.3906-3912
12/18/2000
DOI: 10.1021/cm000570y
Abstract
Nitrogen-rich carbon nitrides are produced as amorphous, bulk solids from the slow thermal decomposition of 2,4,6-triazido-1,3,5-triazine [(C3N3)(N3)3]. This energetic molecular azide is thermally unstable and readily decomposes at 185 °C in a high-pressure reactor to produce carbon nitride materials, e.g., C3N4. Under applied nitrogen gas pressure, (C3N3)(N3)3 decomposes to yield a solid with one of the highest reported nitrogen-to-carbon ratios corresponding to C3N5. This azide precursor also decomposes upon rapid heating to 200 °C to form graphite nanoparticles without any retained nitrogen. Spectroscopic evidence (infrared, nuclear magnetic resonance, and ultraviolet−visible) demonstrates that the carbon−nitrogen solids have significant sp2 carbon bonding in a conjugated doubly bonded network. Electron microscopy reveals that these powders have a glassy microstructure with large irregular pores and voids. C3N4 and C3N5 are thermally stable up to 600 °C and sublime to produce carbon nitride thin films on SiO2 and Si substrates. A discussion on possible azide decomposition pathways and carbon nitride structures is presented.
Details
- Title: Subtitle
- Synthesis of Nitrogen-Rich Carbon Nitride Networks from an Energetic Molecular Azide Precursor
- Creators
- Edward G Gillan
- Resource Type
- Journal article
- Publication Details
- Chemistry of materials, Vol.12(12), pp.3906-3912
- Publisher
- American Chemical Society
- DOI
- 10.1021/cm000570y
- ISSN
- 0897-4756
- eISSN
- 1520-5002
- Language
- English
- Date published
- 12/18/2000
- Academic Unit
- Chemistry
- Record Identifier
- 9984001234902771
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