▎ 摘　　要

NOVELTY - The preparation method of graphene material using Plumeria rubra as raw material involves: (1) crushing dried P.rubra; (2) subjecting P.rubra obtained in step (1) to nitrogen atmosphere conditions, then putting into tubular furnace, heating, carrying out heat preservation, continuously heating at 800-950 degrees C, carrying out heat preservation for 1-2 hours, and slowly cooling to obtain pre-carbonized product; and (3) mixing the pre-carbonized product obtained in step (2) with activating agent, and then placing in tubular furnace under nitrogen atmosphere. USE - The method is useful for preparing graphene material using P.rubra as raw material (claimed). ADVANTAGE - The method enables simple, safe and economical preparation of graphene material using P.rubra as raw material with high yield in an environmentally-friendly manner. DETAILED DESCRIPTION - The preparation method of graphene material using Plumeria rubra as raw material involves: (1) crushing dried P.rubra; (2) subjecting P.rubra obtained in step (1) to nitrogen atmosphere conditions, then putting into tubular furnace, heating at 450-500 degrees C, carrying out heat preservation for 1-2 hours, continuously heating at 800-950 degrees C, carrying out heat preservation for 1-2 hours, and slowly cooling to 25-35 degrees C to obtain pre-carbonized product; and (3) mixing the pre-carbonized product obtained in step (2) with activating agent, where the weight ratio of pre-carbonized product and activating agent is 1:(1-5), then placing in tubular furnace under nitrogen atmosphere condition, heating at 500 degrees C, keeping the temperature for 1-2 hours, continuously heating at 800-1000 degrees C, maintaining the temperature for 1-2 hours, and slowly cooling to room temperature to obtain P.rubra substance graphene, where the activating agent is potassium hydroxide, aluminum nitrate and/or zinc nitrate.