Chin. Phys. Lett.  2003, Vol. 20 Issue (9): 1540-1543    DOI:
Original Articles |
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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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.
Keywords: 61.10.Eq      81.40.Ef      81.07.Bc     
Published: 01 September 2003
PACS:  61.10.Eq  
  81.40.Ef (Cold working, work hardening; annealing, post-deformation annealing, quenching, tempering recovery, and crystallization)  
  81.07.Bc (Nanocrystalline materials)  
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GONG Zhi-Guang, LI Mu-Sen 2003 Chin. Phys. Lett. 20 1540-1543
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http://cpl.iphy.ac.cn/       OR      http://cpl.iphy.ac.cn/Y2003/V20/I9/01540
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