▎ 摘　　要

NOVELTY - Preparing photocatalytic functional magnetic graphene-based aerogel involves: (1) preparing iron tetranitrophthalocyanine by dissolving 4-nitrophthalonitrile, ferrous chloride and 1,8-diazabicycloundec-7-ene in ethylene glycol, reacting, washing and drying; (2) preparing iron tetraminophthalocyanine by adding the iron tetranitrophthalocyanine and sodium sulfide to N,N-dimethylformamide, stirring to dissolve the crystallized sodium sulfide, reacting, filtering, washing and drying; (3) preparing graphene oxide-based aerogel by adding graphene and anhydrous sodium nitrate to potassium permanganate and concentrated sulfuric acid for oxidation, adding hydrogen peroxide to reduce excess potassium permanganate to obtain a graphene oxide suspension, and freeze drying; (4) preparing graphene oxide magnetically loaded with nano-iron oxide; and (5) preparing photocatalytic functional magnetic graphene-based aerogel photodegradable material. USE - The method is useful for preparing photocatalytic functional magnetic graphene-based aerogel, which is useful for adsorbing and degrading pollution systems containing benzo- alpha -pyrene. ADVANTAGE - The method provides photocatalytic functional magnetic graphene-based aerogel with excellent adsorption and degradation integrated function, and physical and magnetic separation function. DETAILED DESCRIPTION - Preparing photocatalytic functional magnetic graphene-based aerogel involves: (1) preparing iron tetranitrophthalocyanine by dissolving 4-nitrophthalonitrile, ferrous chloride and 1,8-diazabicycloundec-7-ene in ethylene glycol, reacting, washing and drying; (2) preparing iron tetraminophthalocyanine by adding the iron tetranitrophthalocyanine and sodium sulfide to N,N-dimethylformamide, slowly stirring to dissolve the crystallized sodium sulfide, increasing the stirring speed when the temperature is 70-75 degrees C, reacting for 2-4 hours, filtering, washing and drying; (3) preparing graphene oxide-based aerogel by adding graphene and anhydrous sodium nitrate to potassium permanganate and concentrated sulfuric acid for oxidation, adding hydrogen peroxide to reduce excess potassium permanganate to obtain a graphene oxide suspension, and freeze drying; (4) preparing graphene oxide magnetically loaded with nano-iron oxide by dispersing the graphene oxide (GO) suspension in ultrapure water, ultrasonically processing for 2-4 hours, adjusting the pH to 7-7.5 with 5-10% sodium hydroxide solution, adding a mixture of stabilizer and ferrous chloride ethanol solution to the GO suspension, then slowly adding sodium borohydride solution, stirring and reacting for 4-6 hours to obtain gamma -ferric oxide/reduced GO solid; and (5) preparing photocatalytic functional magnetic graphene-based aerogel photodegradable material by dispersing the magnetic nano-iron oxide-loaded graphene oxide and iron tetraminophthalocyanine in a mixed solution of water and triethanolamine, reacting, rotary evaporating the solvent, pouring the remaining liquid into absolute ethanol under vigorous stirring conditions, refrigerating, washing and freeze-drying.