METHOD FOR PRODUCING TUNGSTEN COBALT-DOPED OXIDE Russian patent published in 2021 - IPC C01G41/02 C30B7/10 C30B29/22 B22F9/02 B22F9/24 B01J35/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a technology for producing tungsten cobalt-doped oxide doped, which can be used as a photocatalyst active in the visible light range. Method for producing tungsten oxide doped with cobalt of the composition W_1-xCo_xO₃ (0.01 ≤ x ≤ 0.09) involves obtaining a reaction mixture containing an aqueous solution of cobalt chloride hexahydrate and tungstate hydrate, adding a solution of hydrochloric acid, separating the precipitate and drying. Ammonium paratungstate hydrate of the composition (NH₄)₁₀(H₂W₁₂O₄₂)·4H₂O is used as tungstate hydrate, taken with respect to the cobalt chloride hexahydrate of the composition CoCl₂·6H₂O in the molar ratio in terms of metal W : Co = (0.99-0.91) : (0.01-0.09). The reaction mixture is subjected to hydrothermal treatment at a temperature of 160-200°C and an excess pressure of 360-617 kPa for 20-26 hours.

EFFECT: proposed method is simple and technologically advanced and provides the production of tungsten cobalt-doped oxide doped with a significant reduction in the band gap, which leads to an increase in the photocatalytic activity of the material when irradiated with visible light.

1 cl, 2 dwg, 3 ex