Entity

Time filter

Source Type


Prikhod'ko N.G.,National Academy of science of the Republic of Kazakhstan | Prikhod'ko N.G.,Almaty University of Energetics and Communications | Mansurov Z.A.,National Academy of science of the Republic of Kazakhstan | Auelkhankyzy M.,National Academy of science of the Republic of Kazakhstan | And 3 more authors.
Russian Journal of Physical Chemistry B | Year: 2015

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 ID/IG = 0.36. © 2015, Pleiades Publishing, Ltd. Source


Prikhod'Ko N.G.,National Academy of science of the Republic of Kazakhstan | Lesbaev B.T.,National Academy of science of the Republic of Kazakhstan | Auelkhankyzy M.,National Academy of science of the Republic of Kazakhstan | Mansurov Z.A.,National Academy of science of the Republic of Kazakhstan
Russian Journal of Physical Chemistry B | Year: 2014

The results of studying the synthesis of graphenes in a premixed propane-oxygen-argon flame at atmospheric conditions are reported. The temperature of 900-950°C and exposure time of 5 min are demonstrated to be suitable for the synthesis of graphene films on a nickel substrate, which is preferable to a copper substrate. It is demonstrated that the formation of graphene layers on the substrate occurs vertically along the flame height, with subsequent changeover to a soot structure. It is shown that the minimum number of graphene layers (two or three) is observed at angles of inclination of the substrate relative to the vertical axis of the flame within 0°-30°. © 2014 Pleiades Publishing, Ltd. Source

Discover hidden collaborations