Synthesis of carbon nitride crystals at high pressures and temperatures
1998 ◽
Vol 13
(12)
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pp. 3458-3462
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Keyword(s):
X Ray
◽
Carbon nitride crystals have been synthesized from C3N4H4 in the presence of a nickel-based alloy or cobalt as a catalyst at high pressure of 7 GPa and temperature of about 1400 °C. Scanning electron microscopy showed rod-like, well-faceted crystals with size of several micrometers, and the N content in these carbon nitride crystals was 47–62%. X-ray diffraction indicated the crystals were composed of α–C3N4 and β–C3N4. The experimental lattice constants of α–C3N4 (a = 6.425 Å, c = 4.715 Å ) and β–C3N4 (a = 6.419 Å, c = 2.425 Å ) agree with ab initio calculations very well.
1984 ◽
Vol 42
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pp. 288-289
1992 ◽
Vol 50
(2)
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pp. 1322-1323
2018 ◽
Vol 21
(7)
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pp. 495-500
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2012 ◽
Vol 174-177
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pp. 508-511
2007 ◽
Vol 561-565
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pp. 2163-2166
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