▎ 摘　　要

N-doped reduced oxide graphene (N-rGO) was successfully attached with CeO2 nanoparticles (CeO2NP) through a simple design rout by using ethylenediamine as N source and reduce agent. CeO2 with particle size distribution of 1-5 nm was highly coated on N-rGO. Scanning electron microscopy, X-ray photoelectron spectroscopy, transmission electron microscopy, X-ray diffraction and electrochemistry were used to investigate the nanocomposite. In order to characterize the electro-catalysis of the as-prepared nanocomposite, CeO2NP/N-rGO-modified electrode toward the electrochemical response of H2O2 was recorded. The experimental results displayed that the as-prepared nanocomposite exhibited a better electrocatalytic property for H2O2. The possible synthesis mechanism and electro-catalytic mechanism of the as-prepared nanocomposite were proposed. (C) 2016 Elsevier B.V. All rights reserved.