▎ 摘　　要

NOVELTY - Reduction preparation of nano-silver-particle-loaded graphene oxide catalyst, involves adding freeze-dried graphene oxide powder to deionized water, ultrasonically dispersing for 30-50 minutes to obtain 0.5-2 mg/mL graphene oxide solution, adding tris(hydroxymethyl)aminomethane buffer to the graphene oxide solution, adjusting the pH to 8.5, adding 1-3 mg/mL dopamine hydrochloride, stirring at room temperature for 19-22 hours, while dopamine polymerization cyclization slowly occurs under the action of oxygen in air to obtain a viscous polydopamine, centrifuging, washing, removing chloride ions, adding silver nitrate solid, stirring at room temperature for 23-26 hours, washing, removing unreacted silver nitrate, and freeze-drying. The loading amount of nano silver particles is 10-50%. USE - Reduction preparation of nano-silver-particle-loaded graphene oxide catalyst used for amination of p-nitrophenol (claimed). DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for use of the catalyst for amination of p-nitrophenol under normal pressure and temperature for 10-30 minutes, using sodium borohydride, at a conversion efficiency of 58.6-99.5%.