▎ 摘　　要

Solvothermal method was used to synthesize a unique nanostructure with hedgehog shaped microspheres assembled by ordered Mn2CuO4 nanobelts, which was characterized by SEM, TEM and XRD. These Mn2CuO4 microspheres were loaded on graphene oxide (GO) support to form Mn2CuO4/GO nanocomposites, and its application for highly efficient sensing of hydrogen peroxide (H2O2) was demonstrated. The CV and amperometry results indicated that Mn2CuO4/GO nanocomposites exhibited superior electrocatalytic performance over Mn2CuO4 for H2O2 detection. The developed sensor shows a high detection sensitivity (838.9 mu A mM cm(-2)), a wide linear concentration range (0.5-2352 mu M), and a low limit of detection (20 nM). In addition, the Mn2CuO4/GO based H2O2 sensor possesses good reproducibility, stability, selectivity and effective sample application.