METHOD AND DEVICE FOR PLASMOCHEMICAL SYNTHESIS OF NANO-OBJECTS Russian patent published in 2009 - IPC B82B3/00 C30B30/00 C30B29/60 

FIELD: nanotechnology.

SUBSTANCE: invention relates to synthesis of nano-objects of different chemical elements and its compounds, which can be used in electronic components, catalysts, in medicine, construction etc. Method of plasmochemical synthesis of nano-objects is in that it is created plasma jet by means of passage of orifice gas through the voltaic arc with following going out of formed plasma through parallel hole, in which it is introduced initial dispersed material in the form of powder and it is act to plasma and this material by high-frequency magnetic field, increasing volume of plasma jet and plasma temperature, and into area between reaction zone and water-cooled chamber it is fed flow of cooling inert gas, herewith into plasma it is introduced catalyst by means of evaporation of composition cathode, into content of which it is included catalyst, cathode is moved while its evaporation for providing of arc length constancy, and in low-temperature area of plasma by electrons excitation system it is additionally increased electron energy by means of feeding of direct voltage 25 V to emitter of resonance-tunnel structure of electrons excitation system, herewith into cooling flow of inert gas it is introduced dispersed liquid. Device for method implementation contains dielectric casing of plasmatron 22 with opening 24 for feeding of orifice gas, in which there are placed holder 19 with cathode 18 and anode 23, containing openings 25 for feeding of carrier gas and initial dispersed material, reaction chamber 26, waterproof connected to anode 23, around which it is located generator of high-frequency magnetic field 27, water-cooled chamber 29, connected to reaction chamber 26. Device is additionally outfitted by rollers 20, controlled device of autofeed of cathode with checking by current between cathode and anode, cathode 18 is located in opening of anode 23 at depth 1-2 mm with clearance in 2±1 mm, herewith cathode 18 is implemented as composition, into content of which it is included nano-object synthesis catalyst, herewith device contains excitation system of plasma electrones 28, including resonance-tunnel structure with system of heatproof electrodes, located in reaction chamber 26, placed into system of heatproof electrodes sprayer 36 for feeding by means of supercharger 35 of flow of inert gas mixture and dispersed liquid, gas distributor 33, inlet of which is connected to airlift pump 34, and outlets - with opening of dielectric casing of plasmatron 22, with opening in anode 23 for feeding of carrier gas and dispersed material and with first inlet of supercharger 35, herewith the second inlet of supercharger 35 is connected to water-cooled chamber 29, which is divided for two sections and for two thirds is filled by liquid, selected from row: distilled water, alcohol, solvent, and top part of the first section is connected to bottom part of the second section through mesh 31 with openings less than 0.2 mm, and reaction chamber 26 is connected to water-cooled chamber 29 pipe 32, bottom part of which is submerged into liquid of water-cooled chamber 29.

EFFECT: development of effective method of plasmochemical synthesis of nano-objects.

2 cl, 2 ex, 5 dwg