▎ 摘　　要

NOVELTY - Preparation of graphene-supported ferrocobalt metal organic framework material involves dissolving graphene in N,N-dimethylformamide (B), performing ultrasonic treatment for 50-70 minutes at ultrasonic frequency of 35-45 kHz, obtaining mixed solution, mixing the obtained mixed solution with ferrocobalt metal organic framework material obtained using N,N-dimethylformamide, glacial acetic acid, ferrocobalt and 3,3',5,5'-azobenzene tetracarboxylic acid, reacting and drying in an oven at 130-150 degrees C for 3-5 hours. USE - Preparation of graphene-supported ferrocobalt metal organic framework material used in photocatalytic hydrogen production. ADVANTAGE - The method provides graphene-supported ferrocobalt metal organic framework material having excellent stability at less than 400 degrees C, as measured by thermogravimetric analysis. The graphene-supported ferrocobalt metal organic framework material has oxidation potential level of 0.42 eV by cyclic voltammetry and reduction potential level of -1.23 eV. The energy level value of the hydrogen ion reduction of the graphene-supported ferrocobalt metal organic framework material is more negative, thus providing excellent photocatalytic hydrogen production ability. DETAILED DESCRIPTION - Preparation of graphene-supported ferrocobalt (Fe2Co) metal organic framework material involves dissolving graphene in N,N-dimethylformamide (B), performing ultrasonic treatment for 50-70 minutes at ultrasonic frequency of 35-45 kHz, obtaining mixed solution, mixing the obtained mixed solution with ferrocobalt metal organic framework material, reacting and drying in an oven at 130-150 degrees C for 3-5 hours. The ferrocobalt metal organic framework material is prepared by uniformly mixing ferrocobalt, N,N-dimethylformamide (A) and glacial acetic acid, performing ultrasonic treatment for 4-6 minutes at ultrasonic frequency of 35-45 kHz, adding 3,3',5,5'-azobenzene tetracarboxylic acid, ultrasonically-treating for 25-35 minutes at ultrasonic frequency of 35-45 kHz, reacting and drying in an oven at 130-150 degrees C for 2-12 hours. The volume ratio of N,N-dimethylformamide (A) and glacial acetic acid is 2:(0.5-1.5). The volume ratio of N,N-dimethylformamide (A) and ferrocobalt is 2 mL:(10-40) mg. The mass ratio of ferrocobalt and 3,3',5,5'-azobenzene tetracarboxylic acid is 1:(1-2) mg. The mass ratio of graphene and N,N-dimethylformamide (B) is (0.2-0.3) mg:2 mL. The mass ratio of graphene and ferrocobalt metal organic framework material is (0.025-0.25):25.