Preparation and characterization of graphitic carbon nitride through pyrolysis of melamine |
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Authors: | Xuefei Li Jian Zhang Longhai Shen Yanmei Ma Weiwei Lei Qiliang Cui and Guangtian Zou |
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Institution: | (1) National Laboratory of Superhard Materials, Jilin University, Changchun, 130012, China;(2) Jilin Normal University, Siping, 136000, China |
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Abstract: | Graphitic carbon nitride (g-C3N4) has been synthesized via a two-step pyrolysis of melamine (C3H6N6) at 800°C for 2 h under vacuum conditions. X-ray diffraction (XRD) patterns strongly indicate that the synthesized sample
is g-C3N4. Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) morphologies indicate that the product is
mainly composed of graphitic carbon nitride. The stoichiometric ratio of C:N is determined to be 0.72 by elemental analysis
(EA). Chemical bonding of the sample has been investigated by X-ray photoelectron spectroscopy (XPS) and Fourier transform
infrared spectroscopy (FTIR). Electron energy loss spectroscopy (EELS) verifies the bonding state between carbon and nitrogen
atoms. Optical properties of the g-C3N4 were investigated by PL (photoluminescence) measurements and UV–Vis (ultraviolet–visible) absorption spectra. We suppose
its luminescent properties may have potential application as component of optical nanoscale devices. Thermogravimetric analysis
(TGA) and differential thermal analysis (DTA) were also performed. |
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Keywords: | PACS" target="_blank">PACS 81 05 Uw 81 05 Zx 81 16 Be 62 23 Kn 77 84 Bw 82 30 Lp |
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