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High-pressure pyrolysis study of C3N6H6: a route to preparing bulk C3N4

In order to prepare bulk C3N4, high-pressure pyrolysis of melamine (C3N6H6) at different temperatures was carried out. The products were characterized by C, N, H element analysis, Fourier transform infrared spectroscopy, x-ray photoelectron spectroscopy, and x-ray diffractometry. The results of the analysis reveal that graphitic phase C3N4 has been synthesized. It provides a novel route to synthesis of the theoretical superhard cubic C3N4 and other C3N4 phases from organic compounds by a high-pressure and high-temperature method.