METHOD FOR PRODUCING NICKEL-ZINC FERRITE NANOPOWDER Russian patent published in 2024 - IPC B22F9/24 B82Y30/00 C01G49/02 C01G53/04 C01G9/02 

FIELD: powder metallurgy.

SUBSTANCE: production of nanostructured powders based on nickel-zinc ferrites, used as the basis for photocatalytically active materials. The method involves dissolving the starting reagents in the form of iron(III) nitrate Fe(NO₃)₃, nickel(II) nitrate Ni(NO₃)₂, zinc nitrate Zn(NO₃)₂, aminoacetic acid C₂H₅NO₂ in bidistilled water, heating until self-ignition is achieved, subsequent heat treatment of the resulting solution combustion product and its grinding. The starting reagents are dissolved to obtain an aqueous solution containing 0.05-0.10 mol/l iron(III) nitrate, 0.025-0.05 mol/l nickel(II) nitrate, 0.025-0.05 mol/l zinc nitrate and 0.01-0.05 mol/l aminoacetic acid, and heat treatment is carried out at a temperature of 400-600°C for 2-4 hours.

EFFECT: obtaining nanopowder with a smaller particle size and a high degree of crystallinity up to 80-100%.

1 cl, 3 ex