The invention discloses a preparation method of
functionalized graphene oxide. The method includes: under an ice-water bath condition, adding
cyanuric chloride into a
mixed solution of
acetone and water, stirring the substances evenly, adding
ammonia water, carrying out reaction at 1-5DEG C for 30-50min, and then conducting filtering, washing and
drying to obtain a material A; adding the materialA into 1, 4-dioxane, mixing the substances evenly, adding a 1, 4-dioxane solution of p-aminodiphenyl amine and
sodium carbonate, conducting stirring at
room temperature for 30-100min, and performing filtering, washing and
drying to obtain a material B; adding the material B into 1, 4-dioxane, adding 1H, 1H-perfluorooctylamine, adjusting the pH to 7, carrying out reaction at 80-90DEG C for 3-4h, and conducting standing, filtering and
drying to obtain a material C; subjecting
graphene oxide to acylating chlorination, then adding the product into
dimethylformamide, adding a material C, carrying out reaction at 80-90DEG C for 20-30h, conducting filtering and drying, mixing the obtained material with
plant polyphenol and water evenly, carrying out reaction at 35-60DEG C for 30-48h, and performing drying.