Cupric acetate/polyacrylonitrile composite nanofibers were prepared by electrospinning and hollow copper oxide (CuO) particles were produced after subsequent thermal treatment process. The electrospun hollow CuO particles modified carbon paste electrode (CPE) was demonstrated for the first time for nonenzymatic hydrogen peroxide (H2O2) sensor. The structures and morphologies of hollow CuO particles were characterized by scanning electron microscopy and X-ray diffraction spectrum. The assay performance of the modified sensor to H2O2 was evaluated by cyclic voltammetry and amperometry, revealing high sensitivity (1746.50 mu A mM(-1) cm(-2)), low detection limit (0.022 mu M) and wide linear response of determination of H2O2 oxidation in the range of 0.05 mu M to 1.00 mM. (C) 2012 Elsevier B.V. All rights reserved.