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Carbon Nitride Compounds Synthesized by Thermal Annealing Amorphous Nanostructured Graphite under the Flow of NH3 Gas |
| GONG Zhi-Guang;LI Mu-Sen |
| College of Materials Science and Engineering, Shandong University, Ji’nan 250061 |
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| Cite this article: |
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GONG Zhi-Guang, LI Mu-Sen 2003 Chin. Phys. Lett. 20 1540-1543 |
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Abstract Graphitic-C3N4 (g-C3N4) and pseudocubic-C3N4 (p-C3N4) have been synthesized by thermally annealing high-energy ball milled amorphous nanostructured graphite powders under NH3 atmosphere. The experimental results by x-ray, transmission electron microscopy, selected electron area diffraction and parallel electron energy loss spectroscopy indicated that g-C3N4 grew from the milled graphite powders in the presence of NH3 gas at a temperature of 1050°C. After treatment at a temperature of 1350°C, the pseudocubic-C3N4 phase forms. It was believed that the high-energy ball milling generates nanosized amorphous graphite structures, under subsequent isothermal annealing in a flow of NH3 gas, the carbon nitride compound can easily form through reaction of nanostructured carbon with nitrogen of NH3.
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| Keywords:
61.10.Eq
81.40.Ef
81.07.Bc
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Published: 01 September 2003
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61.10.Eq
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81.40.Ef
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(Cold working, work hardening; annealing, post-deformation annealing, quenching, tempering recovery, and crystallization)
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81.07.Bc
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(Nanocrystalline materials)
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