INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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Synthesis of Graphite-like Carbon Nitride in Different Atmospheres and Its Thermal Stability |
JIANG Pengcheng, WANG Zhoufu, WANG Xitang, LIU Hao, MA Yan
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The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China |
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Abstract Graphite-like carbon nitride(g-C3N4) with lamellar structure was prepared using melamine as raw material via a facile thermal polymerization method at different temperatures in air and argon atmosphere. The effects of melamine pyrolysis in different atmospheres and the thermal stability of g-C3N4 products were studied by TG-DSC, X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM), fourier transform infrared spectroscopy (FT-IR) and Raman. The results showed that the pure phase g-C3N4 with high crystallinity and lamellar structure could be synthesized via the pretreated melamine by thermal polymerization method.In argon atmosphere, g-C3N4 with smooth and compact surface is more favorable than air atmosphere. g-C3N4 with lamellar structure could be observed at 500 ℃, and it could still exist stably at 700 ℃. The thermal stability of g-C3N4 synthesized in argon atmosphere was better than g-C3N4 in air atmosphere.
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Published: 23 March 2021
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Fund:National Natural Science Foundation of China (516772195, 51474166), the Program for Innovative Teams of Outstanding Young and Middle-aged Researchers in the Higher Education Institutions of Hubei Province (T201602), and the Special Project of Central Government for Local Science and Technology Development of Hubei Province (2019ZYYD076). |
About author:: Pengcheng Jiang received his bachelor of engineering degree in June 2015 from Wuhan University of Science and Technology. From June 2015 to now, he is co-educated at Wuhan University of Science and Technology for postgraduate and doctoral programs, focusing on the research of catalytic modification of carbon materials and carbon composites refractories. Zhoufu Wang is currently a professor and doctoral supervisor in Wuhan University of Science and Technology. He performed collaborative research in 2007—2008 in Department of Engineering Materials (University of Sheffield). He has published more than 80 journal papers, applied 41 national patents and 22 of them were authorized. His team's research interests are high-tech ceramic powders, microstructure design and perfor-mances of refractories, refractories for advanced smelting technologies, advanced insulation materials, and so on. |
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