Effective Route to Graphitic carbon Nitride from Ball-Milled Amorphous carbon in NH3 Atmosphere Under Annealing

Graphitic carbon nitride (g-C3N4) powders were successfully synthesized from ball-milled amorphous carbon under NH3 atmosphere at high temperature, for the first time to the best of our knowledge. The combined charac-teristic data obtained by x-ray diffraction, high-resolution transmission-electron microscopy, electron energy losss pectroscopy, Raman spectroscopy, energy dispersive spectroscopic analysis, and Fourier transformation infrared spectroscopy provide substantial evidence for the graphite-like sp^2-bonded structure with C3N4 stoichiometry.