▎ 摘　　要

In this paper, nitrogen doped graphene (NG) was successfully synthesized via thermal annealing employing graphene oxide and urea as raw materials. The morphology and microstructure of NG was characterized by TEM, AFM, XRD and XPS, respectively. Due to its unique structure and properties originating from nitrogen doped in graphene frame, NG shows highly electrocatalytic activity towards the oxidation of p-phenylenediamine (PDA). A sensitive detection platform based on NG modified electrode (NG@GCE) was constructed. Moreover, a low detection limit of 0.67 mu M (S/N=3) with the wide linear range of 2 to 500 mu M and fast response (within 3 s) are obtained. This new strategy opens a new facile and simple route to electrochemically determinate aromatic amines in environmental analysis and other electrocatalytic applications.