CATALYST, METHOD FOR ITS PREPARATION AND METHOD FOR PHOTOCATALYTIC PRODUCTION OF HYDROGEN Russian patent published in 2023 - IPC B01J27/24 B01J23/42 B01J35/10 B01J37/02 B01J37/08 C01B3/16 

FIELD: photocatalysis.

SUBSTANCE: invention relates to the field of photocatalysis. A catalyst for the process of photocatalytic production of hydrogen from an alkaline solution of triethanolamine under the action of visible radiation with platinum particles deposited on the surface of graphite-like carbon nitride g-C₃N₄, having a composition of 0.5 wt.% Pt/g-C₃N₄ and characterized by the following parameters is described: 80 m²/g, pore volume 0.27-0.33 cm³/g, particle size 15-18 nm. A method for preparing the above catalyst is described, which consists in thermolysis of the supramolecular adduct melamine-cyanuric acid in air at a temperature of 550°C for 2 h to obtain graphite-like carbon nitride g-C₃N₄, impregnation of g-C₃N₄ with a solution of platinum nitrate in acetone, followed by reduction of platinum in a stream of hydrogen, resulting in a catalyst having a composition of 0.5 wt.% Pt/g-C₃N₄ and characterized by the following parameters: specific surface 66-80 m²/g, pore volume 0.27-0.33 cm³/g, particle size 15-18 nm. A method for the photocatalytic production of hydrogen from an alkaline solution of triethanolamine under the action of visible radiation at a temperature of 20°C for 1.5 hours, in the presence of the catalyst described above, is described.

EFFECT: obtaining a catalyst with high activity in the processes of photocatalytic production of hydrogen from an alkaline solution of triethanolamine under the action of visible radiation.

3 cl, 2 dwg, 1 tbl, 4 ex