FIELD: chemistry.
SUBSTANCE: invention relates to a method of obtaining iron-carbon nanoparticles, characterised by that iron granules are treated with pulsed electric discharges in a reactor in octane or decane dispersion medium. Treatment is carried out with pulse energy of 0.5-1 J, voltage of 500 V, pulse frequency of 400 Hz, pulse duration of 15 mcm, discharge current of 250 A, and time for exposure to pulsed electric discharges is selected in the 50-120 s interval. The solid phase is separated from the obtained suspension by separate removal from the reactor of a suspension with a coarse fraction with particle size greater than 0.5-1.5 mcm and a suspension with a fine fraction with particle size 57-65 nm, from which a magnetic fraction is separated and then dried and heated to 150°C.
EFFECT: invention increases size homogeneity (particle size 57-70 nm), magnetic susceptibility and specific surface area of iron-carbon nanoparticles.
2 tbl, 1 dwg
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2014 |
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1999 |
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