Flame synthesis of graphene layers at low pressure

• Published in: Russian journal of physical chemistry. B Vol. 9; no. 5; pp. 743 - 747
• Main Authors: Prikhod’ko, N. G., Mansurov, Z. A., Auelkhankyzy, M., Lesbaev, B. T., Nazhipkyzy, M., Smagulova, G. T.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-09-2015
• Subjects: Chemical Physics of Nanomaterials; Chemistry; Chemistry and Materials Science; Physical Chemistry; combustion; butane; graphene layers; pressure; flame; Raman spectrum; graphene; benzene
• ISSN: 1990-7931; 1990-7923
• DOI: 10.1134/S1990793115050115

The synthesis of graphene layers on a nickel substrate in a butane–benzene–oxygen premixed flame at a pressure of 40–100 Torr is studied. It is demonstrated that, the temperature of 900–950°C and exposure time of 0.5 min are sufficient for synthesizing graphene layers on a nickel substrate. It is shown that, at a pressure of 45–55 Torr, single-layer graphene is predominantly formed. It is found that, at a pressure of 90 Torr and an exposure time of 0.5 min, monolayer graphite can be produced, but with a lower yield as compared to that prepared at 45–55 Torr. It is demonstrated that the degree of defectiveness of graphenes decreases with the exposure time, reaching a minimum value of
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