Carbon nitrides synthesized by glow discharge method

• Published in: Journal of alloys and compounds 2002-11, Vol.346 (1-2), p.230-234
• Main Authors: Li, Z.Q, Zhou, J.Y, Zhang, J, Chen, T.B, Yuan, J
• Format: Article
• Language: English
• Subjects: Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Inorganic compounds; Materials science; Materials synthesis; materials processing; Methods of materials synthesis and materials processing; Nitride materials; Photoelectron spectroscopy; Physics; SEM; Structure of solids and liquids; crystallography; Structure of specific crystalline solids; Synthesis; X-ray diffraction
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/S0925-8388(02)00484-X

Carbon nitrides were synthesized by a glow discharge method. The characterization of the carbon nitrides was carried out using X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transformation infrared (FTIR) spectroscopy, as well as X-ray photoelectron spectroscopy (XPS). The structure of the resulting material is strongly dependent on the synthesis temperature. Crystalline α-C3N4 and amorphous graphite were obtained at 500°C. After having been annealed at 500°C the amorphous graphite transformed into the Chaoite structure. An orthorhombic structure with a=0.270 nm, b=0.718 nm and c=0.970 nm was obtained in the specimen synthesized at 800°C. FTIR and XPS confirmed that this orthorhombic phase is a carbon nitride with an N:C ratio of about 0.63.