▎ 摘　　要

NOVELTY - Preparation of a graphene oxide grafted 8- hydroxyquinoline fluorescent compound comprises reacting graphene oxide, N, N-dimethylformamide, and thionyl chloride at a ratio of 0.2-0.4 g: 18-22 mL: 0.5-1.5 mL at 75-85 degrees C for 45-50 hours, centrifuging, taking supernatant, adding tetrahydrofuran, uniformly mixing, centrifuging, taking supernatant and adding tetrahydrofuran, uniformly mixing, repeatedly centrifuging until supernatant is colorless, and removing solvent to obtain acid chloride graphene; and dissolving the acid chloride graphene in tetrahydrofuran, adding 8-aminoquinoline at a ratio of 1-3: 1, reacting at 55-65 degrees C for 82-86 hours, cooling to room temperature, centrifuging, taking supernatant, washing, and drying. USE - Method for preparing a graphene oxide grafted 8- hydroxyquinoline fluorescent compound used for an intercalated layered double hydroxide fluorescent composite material (claimed). ADVANTAGE - The fluorescent composite material can quickly identify and detecting ions in water, and can be quickly separated.