▎ 摘　　要

Graphene layer is a monolayer of graphite. Graphene single layer has confirmed to have a higher electron and hole mobility than silicon and has high heat conduction and special optical properties. And un-perfect graphene sheets exist in any carbon materials. In our previous result to determine the graphene sheets content in any carbon material can be determined by X-ray spectrum combination with a peak decomposition method. In this study, we have prepared two serious carbon materials from wood wastes, with and without MnO2 catalytic pyrolysis processes. Results show that all the G band intensity of all synthesized samples including a commercial graphene powder in Raman spectrum has a proportional relation with the graphene sheets content in these carbon materials.