▎ 摘　　要

The author constructed graphene oxide coupled zero-valent iron composite (G-nZVI) by one-step liquid phase reduction method. The physical morphology and composition of G-nZVI were analyzed by SEM, XRD, XPS and other technologies, and the influencing factors and efficiency of G-nZVI in degrading tetracycline antibiotic oxytetracycline were discussed. SEM\XRD\XPS and others show that in G-nZVI modified by adding surfactant sodium dodecylbenzene sulfonate, iron is Fe0 with a particle size of 1-2nm, which is uniformly loaded on the surface of graphene without agglomeration. The constructed G-nZVI system can fully exert the synergistic effect of graphene adsorption and zero-valent iron degradation in removing tetracycline from water. Under the optimal conditions, the removal efficiency of oxytetracycline can reach 99.39%, when the reaction temperature is controlled at 20 degrees C, the pH of the system is 3, and the reagent/pollutant ratio is 4:1.