▎ 摘　　要

NOVELTY - Preparation of a graphene-gold-palladium Platinum nano metal composite includes preparing solution A by mixing 10 mM cetyltrimethylammonium bromide, 2.5 mM chloroauric acid, 2.5 mM potassium chloroplatinate, 2.5mM potassium chloropalladate, and 10 mL ultrapure water; preparing solution B by placing 20 mL graphene oxide solution in a container, adding solution A, and stirring for 15 minutes; placing solution B in an oil bath at 180 degrees C, heating at reflux for 1 hour, and cooling to room temperature; and centrifuging at 10000 revolutions/minute (rpm) for 5 minutes, washing with ethanol and water. USE - Method for the preparation of a graphene-gold-palladium Platinum nano metal composite(claimed) used as a two-dimensional carrier material to assemble or deposit metal nanoparticle preparation composite catalyst material. ADVANTAGE - The graphene-gold-palladium Platinum nano metal composite increases catalyst property. DETAILED DESCRIPTION - Preparation of a graphene-gold-palladium Platinum nano metal composite comprises: (A) dispersing graphene oxide in an ethylene glycol solution by ultrasound to obtain 0.25 mg/mL brown graphene oxide solution; (B) preparing solution A by mixing 10 mM cetyltrimethylammonium bromide, 2.5 mM chloroauric acid, 2.5 mM potassium chloroplatinate, 2.5 mM potassium chloropalladate, and 10 mL ultrapure water; (C) preparing solution B by placing 20 mL graphene oxide solution in a container, adding solution A, and stirring for 15 minutes; (D) placing solution B in an oil bath at 180 degrees C, heating at reflux for 1 hour, and cooling to room temperature; and (E) centrifuging at 10000 rpm for 5 minutes, washing with ethanol and water.