METHOD FOR PRODUCING NANOCRYSTALLINE TITANIUM DIOXIDE WITH ANATASE STRUCTURE Russian patent published in 2021 - IPC C01G23/47 C30B30/02 C30B29/16 B82B3/00 B82Y40/00 B01J21/06 B01J35/02 B01J37/34 

FIELD: materials science and nanotechnology.

SUBSTANCE: invention relates to the field of materials science and nanotechnology, namely to the production of titanium dioxide, which can be used in hydrogen energy and water purification technologies. The method includes generating a titanium electric-discharge plasma into the first chamber 19, previously evacuated and filled with a gas mixture of argon and oxygen in the ratio of partial pressures Ar:O₂ 1:4 at normal atmospheric pressure and room temperature, using a coaxial magnetoplasma accelerator with a titanium barrel 1 and with a composite central electrode made of a tip made of titanium 2 and a shank made of steel 3, with an electrically fusible jumper made of petroleum jelly 4 weighing from 0.10 to 0.25 g, placed between the titanium barrel 1 and the tip 2, with the capacity of the capacitor bank 18 equal to 14.4 mF and a charging voltage of 2.8 kV, then the nanocrystalline component of the synthesized product is moved into the second, pre-evacuated, chamber 27, opening the bypass valve 28 between chambers 19 and 27 10 s after the generation of the electric-discharge plasma, after which the obtained titanium dioxide with anatase structure is collected from the inner walls of the second chamber 27.

EFFECT: obtaining a product with nanocrystalline anatase content from 83.2 to 85.7 wt% with an average particle size of up to 100 nm and a low content of impurity phases.

1 cl, 3 dwg, 1 tbl