METHOD OF OBTAINING PHOTOCATALYST SnO Russian patent published in 2015 - IPC B01J37/34 B01J23/14 C02F1/30 

FIELD: chemistry.

SUBSTANCE: invention relates to methods of obtaining photocatalyst based on semiconductor tin (II) oxide for decomposition of nitrogen-containing organic water pollutants, which can be applied in chemical industry in purification of sewage waters. Method includes preparation of tin (II) chloride solution with its further hydrolysis in presence of concentrated ammonia, its placement into microwave oven (2450 MHz) with radiation power 539 W for 5-15 minutes, centrifugation of obtained tin (II) oxide and drying at temperature 90°C. hydrolysis is carried out in alkali medium, contributing to formation of ammonia colloidal solution of hydroxoform of tin (II) with further thermal destruction under microwave impact in absence of hydrothermal processing with the following ratio of components in the process of obtaining colloidal solution, wt %: metallic tin - from 1.5 to 1.8; 36% solution of hydrochloric acid - from 48.2 to 57.8; 25% ammonia solution - the remaining part.

EFFECT: elaboration of method of obtaining photocatalyst based on tin oxide with pore size to 18 nm and anisotropy coefficient equal 1, possessing high catalytic activity of decomposition of nitrogen-containing organic pollutants of sewage waters with minimal time consumption.

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