▎ 摘　　要

NOVELTY - The preparation method of noble metal nanoparticles involves weighing nickel nitride nanosheet material and graphene nanosheet material in a mass ratio of 1:1.5-2.5 and then ball milling for 24-48 hours, washing using ethanol and deionized water and then dispersing in ethanol, adding stabilizer and metal precursor including platinum, palladium, gold and silver and then stirring, adding reducing agent including potassium borohydride, sodium borohydride and hydrazine hydrate and then continuously stirring for 1-5 hours and drying. USE - The method is useful for preparation of noble metal nanoparticles. ADVANTAGE - The method enables easy preparation of noble metal nanoparticles with high yield and excellent electrochemical activity and stability.