▎ 摘　　要

AuNPs-Prussian blue-Graphene oxide (AuNPs-PB-GO) hybrid nanomaterials were prepared through a facile one-pot strategy. It was combined redox reaction and co-precipitation reaction. In the process, Ferrous ion both acted as a reductant and a co-precipitation agent. And then, a novel hydrogen peroxide (H2O2) electrochemical sensor based on the hybrid materials was constructed. Experimental characterizations of the as-prepared nano-composites were utilized by scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD), energy-dispersive spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS). These results indicated AuNPs with an average diameter of approximately 30 nm were successfully loaded on the surface of PB-GO nanomaterials. In addition, electrochemical investigations demonstrated that the proposed sensor had superior performance for H2O2 catalysis. The linear current response to H2O2 concentration was calculated to be from 3.8 to 5400 mu M with a detection limit of 1.3 mu M and a sensitivity of 87.6 mu A (mM)(-1) cm(-2). Moreover, the constructed sensor exhibited excellent stability, repeatability, and anti-interference ability for the determination of H2O2. Inspired by the fascinating preparation procedure of hybrid materials and unique electrocatalytic activities, it could enrich and extend the application of nanomaterials in electrochemical sensing.