▎ 摘　　要

NOVELTY - A cobalt phosphide-phosphorus-doped graphene aerogel composite catalyst is prepared by uniformly dispersing composite catalyst aerogel containing 2-40 wt.% cobalt phosphate on phosphorus-doped graphene aerogel surface. The doping amount of phosphorus in graphene aerogel is 0.5-5 wt.%. USE - Cobalt phosphide-phosphorus-doped graphene aerogel composite catalyst for advanced oxidation of sulfanilamide antibiotic (claimed). ADVANTAGE - The method is simple, uses environmentally-friendly phytic acid to achieve in-situ phosphating and phosphorus doping, easily separates composite catalyst from water, eliminates centrifugation, filtration and other steps, which facilitates the regeneration and reuse of catalyst. The sulfonamides antibiotic adsorption and oxidation exerts synergistic effect, which achieves efficient degradation of sulfonamides antibiotic. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) preparation of cobalt phosphide-phosphorus-doped graphene, which involves (S1) mixing cobalt source, phytic acid, graphene oxide and water uniformly, (S2) hydrothermally reacting and freeze-drying, and (S3) calcining in protective atmosphere; and (2) application of cobaltous-phosphorus-doped graphene aerogel composite catalyst, in advanced oxidation of sulfanilamide antibiotic persulfate in water.