▎ 摘　　要

NOVELTY - Method for preparing persulfate-activated nitrogen-doped graphene-supported carbon nitride composite material, involves (a) selecting commercial graphene, melamine and urea, (b) uniformly mixing commercial graphene, melamine, and urea, and (c) placing uniformly mixed commercial graphene, melamine, and urea in a tube furnace under a nitrogen atmosphere, controlling the temperature at 500-600 degrees C for calcination, and controlling the heating rate at 3-8 degrees C/minute, maintaining constant temperature for 220-250 minutes, and cooling to room temperature under nitrogen atmosphere. USE - The method is used for preparing persulfate-activated nitrogen-doped graphene-supported carbon nitride composite material, which is used in the removal of pollutants in water, where the pollutants include one or more combined pollutants such as endocrine disruptors bisphenol A, antibiotic ciprofloxacin, dye acid orange 7, and dye OG in water (all claimed). ADVANTAGE - The method is cost-effective, ensures high efficiency and reduces the dosage amount of the oxidation system catalyst and oxidant for water treatment. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) use of the activated persulfate nitrogen-doped graphene loaded carbon nitride composite material in the removal of pollutants in water, where the nitrogen-doped graphene-supported carbon nitride composite material is prepared by a method for preparing persulfate-activated nitrogen-doped graphene-supported carbon nitride composite material; and (2) a method of using the activated persulfate nitrogen-doped graphene loaded carbon nitride composite material in the removal of pollutants in water, comprising taking nitrogen-doped graphene-supported carbon nitride composite material prepared according to the method for preparing persulfate-activated nitrogen-doped graphene-supported carbon nitride composite material as the catalyst which is added to the sewage to be treated, adding peroxymonosulfate as an oxidant, stirring or shaking at room temperature or leaving still.