▎ 摘　　要

Nitrogen-doped graphene (NC) shows enhanced electrocatalytic activity toward the reduction of nitroaromatic compounds with a decreased overpotential (ca. 20 mV) compared with thermally reduced graphene (TR-G) and thus a NC-based sensing platform for sensitively electrochemical detection of TNT with a lower detection limit has been constructed. This prominent electrocatalytic activity of NC could be ascribed to the pyridine-like nitrogen atoms existing at the edge plane of graphene sheets. (C) 2011 Elsevier B.V. All rights reserved.