Increased magnetization of reduced graphene oxide by nitrogen-doping

N-doped graphene (NG) has been prepared by annealing reduced graphene oxide (RGO) in ammonia. The magnetic properties of RGO and NG have been studied. The results showed that doping RGO with N at a relatively low temperature (<= 600 degrees C) can increase its magnetization, and which can be increased by 64.1% at the annealing temperature of 500 degrees C. (C) 2013 Elsevier Ltd. All rights reserved.