METHOD OF PRODUCING DISPERSED BACTERICIDAL COMPOSITIONS BASED ON ALUMINIUM OXIDE AND SILVER PARTICLES Russian patent published in 2025 - IPC C01F7/02 A01N59/06 A01N59/16 

FIELD: chemistry.

SUBSTANCE: invention relates to production of powdered inorganic composite materials which can be used as components of bactericidal agents. Method involves synthesis of aluminium oxide particles coated with silver particles through thermal decomposition of aluminium nitrate, reduction of silver taken in form of an aqueous solution of its nitrate, with addition of an organic component. Synthesis of the dispersed bactericidal composition is carried out in a single reaction cycle. Silver nitrate and aluminium nitrate are dissolved in water in predetermined proportions to obtain one solution. Aqueous solution of a water-soluble non-ionic polymer is then added. Solvent is removed by drying with protection from direct exposure to light. Combustion process takes place in the obtained precursor. Final thermal treatment of composition in air is carried out at temperatures of 650-850 °C for 4-8 hours.

EFFECT: low power consumption and time spent on producing antibacterial dispersed compositions, simple method for production thereof, achieving reproducible results in terms of composition, reduced amount of impurities while achieving good bactericidal properties.

5 cl, 13 dwg, 1 tbl, 25 ex