Figure 1

Schematic illustration of growth of graphitic N dominated graphene (GG) at 200–300 °C (a–c) and pyrrolic N dominated graphene (PG) at 400–600 °C (a,d,e), respectively, via the free radical reaction.
Schematic illustration of growth of graphitic N dominated graphene (GG) at 200–300 °C (a–c) and pyrrolic N dominated graphene (PG) at 400–600 °C (a,d,e), respectively, via the free radical reaction.