METHOD OF PRODUCING AQUEOUS SUSPENSIONS OF NANOCOMPOSITE MATERIAL BASED ON GRAPHENE OXIDE AND ZIRCONIUM TRISULPHIDE WITH ANTIMICROBIAL PROPERTIES Russian patent published in 2020 - IPC C01G25/00 B82B3/00 C01G1/12 C01B32/198 B01J13/00 A01P1/00 A01N59/02 B82Y40/00 

FIELD: chemistry.

SUBSTANCE: first, zirconium trisulphide is synthesized from zirconium metal and elemental sulphur powder, taken in stoichiometric ratio according to reaction Zr + 3S = ZrS₃, sealed in quartz ampoules in vacuum of not less than 10^-3 bar. Synthesis is carried out in a tubular furnace for 48–72 hours at a temperature in the hot zone of 700–900°C at gradient created due to temperature in the colder zone to 700 °C. Obtained ZrS₃ crystals in concentration of 0.001–0.01 g/l are dispersed in ultrasonic treatment in a suspension containing deionised water and 0.1–1 g/l of graphene oxide particles. Obtained colloidal solutions are water-stable dispersions with pronounced antimicrobial action.

EFFECT: invention can be used in chemical industry and agriculture for treatment of porous systems, including various types of soil, in order to suppress activity of pathogenic microorganisms.

1 cl, 2 dwg, 1 ex