▎ 摘　　要

NOVELTY - Nanocomposite material is claimed. The nanocomposite material is composed of graphene-supported silver-ferrite heterogeneous nanoparticles. USE - The nanocomposite material is useful for electrocatalyst (claimed). ADVANTAGE - The material has high conductivity catalytic activity, simple preparation process, low cost, and excellent dispersibility; and is suitable for industrial production. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparation of nanocomposite material comprising supporting silver-ferrite heterogeneous nanoparticles to graphene to obtain graphene-supported silver-ferrite nanocomposites on graphene oxide, and then reducing the preparation of graphene-loaded silver-ferrite nanocomposites process at room temperature, dispersing silver-ferrite heterogeneous nanoparticles in organic solvent and dispersing graphene in water mixing in the mass ratio of silver-ferrite heterogeneous nanoparticles and graphene is 1:2-5, ultrasonic dispersing for 10-60 minutes, stirring for 12-24 hours and magnetic phase magnetic separating to obtain graphene-supported silver-ferrite nanocomposites, washing the material with water for 3-5 times, dispersing in ethylene glycol, ultrasonic dispersing for 30-60 minutes, adjusting pH the pH to 13 with sodium hydroxide, refluxing at 130 degrees C for 2-3 hours under argon atmosphere and magnetic separating to obtain final product.