▎ 摘　　要

NOVELTY - Preparing catalyst comprises (1) dissolving aniline and ammonium persulfate in hydrochloric acid solution respectively to obtain aniline solution and ammonium persulfate solution, (2) freezing the ammonium persulfate solution, then pouring the graphene oxide solution into it, and freezing to obtain the system M, (3) pouring the pre-cooled aniline solution into the system M for reaction, filtering after the reaction, and washing and drying the obtained solid matter, and (4) performing thermal reduction on the dried solid matter to obtain a catalyst for targeting activation of persulfate to generate singlet oxygen. USE - The method is useful for preparing catalyst, which is used in degrading PPCP pollutants (claimed) used for generating singlet oxygen by targeting activated persulfate. Can be used in oxidation treatment of typical new pollutants in water. ADVANTAGE - The method is simple in operation, mild in conditions, strong in repeatability, and easy to realize. The catalytic material is three-dimensional graphite nitrogen-doped graphene with high conductivity and a catalytic interface with many unpaired electrons, which can enhance the effect of persulfate to generate singlet oxygen. The catalytic material can be recycled, is environmentally friendly, and has a wide pH range, does not need to consume additional energy (e.g. ultrasound, light, and electricity), reduces costs, and a short catalytic time and broad practical application prospects. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a catalyst for generating singlet oxygen by targeting activated persulfate.