Acta Phys. -Chim. Sin. ›› 2017, Vol. 33 ›› Issue (12): 2542-2549.doi: 10.3866/PKU.WHXB201706151

• ARTICLE • Previous Articles     Next Articles

Radiation Induced Synthesis of Amorphous Molybdenum Sulfide/Reduced Graphene Oxide Nanocomposites for Efficient Hydrogen Evolution Reaction

Pengfei CAO1,Yang HU1,Youwei ZHANG2,Jing PENG1,Maolin ZHAI1,*()   

  1. 1 Beijing National Laboratory for Molecular Sciences, Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
    2 Aviation Key Laboratory of Science and Technology on Stealth Materials, Beijing Institute of Aeronautical Materials, Beijing 100095, P. R. China
  • Received:2017-05-03 Published:2017-09-05
  • Contact: Maolin ZHAI
  • Supported by:
    the National Natural Science Foundation of China(11405168);the National Natural Science Foundation of China(11505011)


Molybdenum sulfide is an efficient catalyst for the hydrogen evolution reaction (HER) and its synthesis has attracted significant attention in recent years. In this work, molybdenum sulfide/reduced graphite oxide (MoSx/RGO) was prepared by the γ-ray induced reduction of ammonium tetrathiomolybdate and graphite oxide. The composition, morphology, and structure of the MoSx/RGO composites were determined by X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), transmission electron microscopy (TEM), and Raman spectroscopy. The results confirmed the formation of amorphous MoSx/RGO composites. Subsequently, the effects of the absorbed dose and precursor ratio on the performance of the composite material as the catalyst for HER were studied systematically. The resultant MoSx/RGO composites were found to show excellent catalytic activity towards HER. With a catalyst loading of 0.275 mg·cm-2, an onset overpotential of 110 mV, a Tafel slope of 46 mV·dec-1, and a current density of 10 mA·cm-2 at the overpotential of 160 mV can be achieved. These results can be considered as the proof of Volmer-Heyrovesy mechanism. In addition, the MoSx/RGO catalyst also showed an excellent long-time stability during the evaluation for HER.

Key words: Molybdenum sulfide, Reduced graphene oxide, Radiation synthesis, Hydrogen evolution reaction, Volmer-Heyrovesy mechanism


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