▎ 摘　　要

NOVELTY - Biological graphene-based material preparation involves treating biological carbon source material in a microwave for 1-24 hours, and washing the treated carbon source material. A catalyst is mixed with the washed carbon source material, and then calcined in presence of protective gas at 600-1600 degrees C for 12 hours. The calcined material is cooled to obtain the desired product. The catalyst is selected from platinum, palladium, rhodium or iron. USE - Method for preparing biological graphene-based material (claimed). ADVANTAGE - The method enables to prepare biological graphene-based material with high yield and purity in a cost-effective manner. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing a biological graphene-based material.