▎ 摘　　要

Nitrogen-doped graphene-silver nanoparticle hybrids were prepared by thermal treatment of graphite oxide (GO) with glycine and silver nitrate at 500 degrees C. Glycine was used to reduce the nitrate ions, resulting in the decomposition of a glycine-nitrate mixture near 200 degrees C. The products of decomposition act as sources for nitrogen doping. The thermal treatment of a mixture of GO, glycine and silver nitrate results in the formation of silver nanoparticles at 100 degrees C, promotes the reduction of GO near 200 degrees C, and generates pyrrolic and pyridinic type nitrogen doping in graphene at 300 and 500 degrees C, respectively. The atomic percentage of nitrogen in as-prepared sample is about 13.5%. This approach opens up a new possibility for the synthesis of nitrogen-doped graphene decorated with various metallic nanoparticies, which could find important applications in the fields of energy storage and conversion devices. (C) 2012 Elsevier Ltd. All rights reserved.