▎ 摘　　要

NOVELTY - A nitrogen-doped graphene-gold silver double bimetallic nanocomposite material preparing method involves utilizing GO compound, dispersing into the ultrapure water and dispersant, to obtain aqueous solution, after adding 1% chloroauric acid, and agitating. Ammonium carbonate is added to solution, stirred, the mixture is transferred to the autoclave at 130 degrees C for 10 hours, followed by centrifuging and finally washing with ultrapure water for several times until the pH of the supernatant upper layer is 7, and adding ultrapure water to the precipitate to obtain 1 mg/mL-1 NG-Au suspension. USE - Method for preparing nitrogen-doped graphene-gold silver double bimetallic nanocomposite material. DETAILED DESCRIPTION - A nitrogen-doped graphene-gold silver double bimetallic nanocomposite material preparing method involves utilizing GO compound according to the existing technology, dispersing into the ultrapure water and dispersant, to obtain aqueous solution, after adding 1% chloroauric acid, and ultrasonic agitating for 0.5 hours. Ammonium carbonate is added to the solution, stirred, the mixture is transferred to the autoclave at 130 degrees C for 10 hours, followed by centrifuging and finally washing with ultrapure water for several times until the pH of the supernatant upper layer is 7, and adding ultrapure water to the precipitate to obtain 1 mg/mL-1 NG-Au suspension.