▎ 摘　　要

Molybdenum dioxide nanoparticles embedded porous reduced graphene oxide (MoO2-pGR) were prepared for catalyzing the hydrogen evolution reaction (HER) by a simple pyrolysis method. The as-prepared product was characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The HER electrocatalytic property of MoO2-pGR in acidic solution was evaluated by linear sweep voltammetry (LSV). As expected, MoO2-pGR composites exhibit a high HER active with a low Tafel slope of 57.8 mV dec(-1), a small onset potential (E-onset) of -72.53 mV US. RHE and an outstanding long-term stability. These results provide a new thought for the synthesis of MoO2-pGR composites as an excellent HER catalysts. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.