METAL-NON-CONTAINING THIN-FILM PHOTOCATALYST FOR MOLECULAR OXYGEN REDUCTION AND A METHOD FOR PRODUCTION THEREOF Russian patent published in 2019 - IPC B01J35/00 B01J27/08 B01J31/06 B01J37/02 B01J37/08 H01B1/06 

FIELD: chemistry.

SUBSTANCE: invention relates to chemical industry, specifically to methods of producing photoactive cathode materials on an organic base. Described is a metal-non-containing thin-film photocatalyst for reducing molecular oxygen, comprising a composite material deposited on the transparent conductive substrate, characterized by the presence of a photoactive layer based on the donor semiconductor polymer and the fullerene acceptor, and catalytic layer, characterized by that catalyst layer material used is difluoromethylene- or perfluoroalkylfullerenes containing in their structure from 1 to 10 perfluoroalkyl addends, each of which contains from 1 to 7 carbon atoms, their hydrides and monoalkylated derivatives showing solubility in methylene chloride and/or chloroform in range of 5 to 25 mg ml^-1. Method of making said metal-non-containing thin-film photocatalyst for reducing molecular oxygen involves preparing a solution for depositing a photoactive layer based on a donor semiconductor polymer and a fullerene acceptor, and solution for application of catalytic layer, formation on transparent conductive substrate of composite material by successive application of photoactive and catalytic layers with their subsequent thermal treatment at 110–160 °C, wherein for preparation of solution of catalyst layer there are used difluoromethylene and perfluoroalkyl fullerenes, their hydrides and monoalkylated derivatives, wherein solvent for application of photoactive layer is opto-dichlorobenzene, and for catalytic layer – methylene chloride or chloroform, total concentration of solution for application of photoactive layer is 25±2 mg in ml, for application of catalytic layer – 15±10 mg in ml, solutions are applied in amount of 40–50 mcl per square cm.

EFFECT: production of metal-non-containing thin-film photocatalysts of molecular oxygen reduction with improved characteristics, which can be used to increase efficiency of fuel elements and sensitivity of molecular oxygen sensors.

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