Synthesis of Hydrogenated Graphene during Acetylene Conversion in Helium Plasma Jet

Hydrogenated graphene has been synthesized in one step by acetylene conversion in a helium plasma jet. A dc plasma torch with a diverging anode channel and a power up to 45 kW has been used to generate plasma. The obtained graphene materials have been studied by scanning electron microscopy, Raman spectroscopy, and elemental analysis. Hydrogen desorption from the samples synthesized has been studied by thermal analysis as a function of temperature. It has been found that during annealing in vacuum, the synthesis products change their morphology because of hydrogen release.     

Numerical and Experimental Study of the Multichannel Nature of the Synthesis of Carbon Nanostructures in DC Plasma Jets

Plasma Chemistry and Plasma Processing - Wide spectrum of carbon nanostructures was synthesized by means of simple plasma chemistry using DC plasma torch: carbon nanotubes, nanowalls, graphene,...     

Plasma Pyrolysis of Ethanol for the Production of Carbon Nanostructures

High Energy Chemistry - An experimental and numerical study of the synthesis of carbon nanostructures by pyrolysis of alcohol in helium and nitrogen plasma jets generated by a DC plasma torch in...     

Continuous Synthesis of Hydrogenated Graphene in Thermal Plasma

A single-stage catalyst free synthesis of hydrogenated graphene was studied in the process of methane conversion in a helium plasma jet created by a plasma torch at the power up to 45 kW and the pressure of 710 Torr. The synthesis products were studied by the methods of scanning and transmission electron microscopy, thermal analysis, Raman spectroscopy, X-ray photoelectron spectroscopy, and X-ray diffraction analysis.