▎ 摘　　要

Here we reported a simple and efficient method for the in situ synthesis of nitrogen-graphene and metal/nitrogen-graphene in bulk by pyrolysis of copper phthalocyanine in an Ar atmosphere at 800 degrees C. By introducing copper foil as the substrate for pyrolysis of organometallic precursors, the rolling up process of graphene sheets into micro/nanoscroll was observed. We believe that a solid-pyrolysis approach opens opportunities for the mass production of graphene based materials at low cost and is useful in applications that need graphene as bulk materials.