▎ 摘　　要

Graphite oxide was synthesized via Hummers method with flake graphite as raw material. After centrifugation and washing to clean out the remnant slat, ethylenediamine (EDA) was added into the dispersion to react with graphene oxides giving rise to functional graphene sheets (FGS). The dried FGS can interact with microwaves strongly, producing superheating which results in decomposing the grafted EDA molecules and in-situ doping graphene sheets. The morphology, structure, and components of the as-produced graphene were characterized by scanning electron microscopy (SEM), transmission electron microscope (TEM), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), energy dispersion spectrum (EDS). The results showed that nitrogen-doped graphene sheets (NGS) can be successfully synthesized via this strategy. The synthesized nitrogen-doped graphene was transparent.