Synthesis of nanomaterials in the combustion process
Abstract
Present original results in the synthesis of fullerenes; carbon black; and superhydrophobic metal oxide nanoparticles in hydrocarbon flames; as well as education in the flame of layered graphene films. In the synthesis of fullerenes was found; that the electrons emitted from the needle electrode; distributed in the volume of a cone; and to a lesser degree of influence on the outer edges of the flame; and the electrons emitted from the annular electrode is treated not only the inner region; but also the edge of the flame; which creates conditions for growth fullerenes. Studied the formation of hydrophobic soot in the diffusion of propane - oxygen flame on the silicon and nickel substrates at atmospheric pressure and defined conditions for the formation of superhydrophobic carbon black on a nickel substrate from exposure to electric fields. It is established that the imposition of an electric field; regardless of the substrate material; deposition of soot narrows the field to the substrate; and a diameter of 2.5 - 3 cm from the center formed a diesel particulate superhydrophobic surface with wetting angle from above 1700. The research on graphene formation in propane-oxygen flame without adding argon exposure time 5 minutes on a nickel substrate is formed 5-10 graphene layers. Studied the photovoltaic properties of solar cells coated with nickel oxide nanoparticles synthesized in counterflow propane flame. Nanoparticles of nickel oxides contribute to the efficient absorption of light energy. Surfacing on the surface of a silicon solar cell of nickel oxide nanoparticles led to an increase in the output circuit voltage up to 7%; short circuit current up to 28%; which together led to an increase in solar cell efficiency by 3%.
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