▎ 摘　　要

A simple, eco-friendly and scalable method of obtaining graphene from dead camphor leaves (Cinnamomum Camphora) using one-step pyrolysis is reported here. Under flowing nitrogen atmosphere, dead camphor leaves were heated to 1200 degrees C at 10 degrees C/min and then cooled down to room temperature without external disturbances. With the help of pi-pi interaction with D-Tyrosine and centrifugation, we were able to separate few layer graphene (FLG) from the final pyrolytic components. TGA is adopted to track the degradation process of camphor leaves under 800 degrees C and the formation mechanism of FLG is properly discussed. BET, Raman, SEM, AFM and TEM tests were carried out to characterize the property of graphene, which prove an average of 7 layers of graphene (FLG). (C) 2015 Elsevier B.V. All rights reserved.