LAUSR

Abstract 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 (Eonset) of −72.53 mV vs. 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.