A simple method was proposed for the synthesis of graphitic carbon nitride (g-C3N4)/iron oxide-copper nanostructures through a one-step pyrolysis of Cu-3[Fe(CN)(6)](2) and melamine. The iron oxide and copper nanostructures, derived from Cu-3[Fe(CN)(6)](2), were decorated onto g-C3N4 nanosheets, which can effectively protect the resultant graphitic carbon nitride nanosheets from restacking. The derived Fe2O3 and Cu nanostructures greatly enhance the electro-catalytic property of as-prepared composites. Three components including g-C3N4 nanosheets, Fe2O3 and Cu cooperatively enhance the electrochemical performance of non-enzymatic glucose detection. Modified electrodes based on g-C3N4/Fe2O3-Cu composites could detect glucose in the range of 0.6 mu M-2.0 mM with a detection limit of 0.3 mu M. The asfabricated modified electrodes also demonstrated good stability and anti-interference performance. (c) 2018 Elsevier Ltd. All rights reserved.