NOVEL COMPOSITE MATERIAL CONTAINING IRON COMPOUND AND GRAPHENE OXIDE Russian patent published in 2019 - IPC C01B32/198 C01B3/06 C23C16/40 C23C18/14 B82B1/00 B82B3/00 B82Y30/00 B82Y40/00 

FIELD: chemistry.

SUBSTANCE: invention relates to chemical industry and nanotechnology. Composite material with primary particle size of 0.1–100 mcm contains graphene oxide and 0.1–50 wt. % of iron compound retained thereon, for example Fe₃O₄, Fe₂O₃ or mixtures thereof. Size of particles of iron compound is 0.1–10 nm. In the infrared spectrum of said composite material there is virtually no absorption occurring from the OH group, absorption occurring from the C = O group, and absorption of about 701 cm^-1, occurring from the Fe-O group, but there is absorption occurring from the CO group. To obtain said composite material, the corresponding raw materials are suspended in an inert solvent and the obtained suspension is irradiated with UV and visible radiation with wavelength of 100–800 nm from 1 minute to 24 hours. As a raw material of the iron compound, at least one of iron and an inorganic acid, an iron salt and a carboxylic acid, an iron salt and sulphonic acid, iron hydroxide, phenol iron, double iron salts and iron complexes. Obtained composite material is used as a photocatalyst or equipment when producing hydrogen from water and/or alcohol by irradiating with sunlight or LED white light.

EFFECT: simplified method of producing photocatalyst, longer service life.

15 cl, 24 dwg, 1 tbl, 9 ex