ISSN 1000-6818CN 11-1892/O6CODEN WHXUEU
Acta Phys Chim Sin >> 2017,Vol.33>> Issue(12)>> 2542-2549     doi: 10.3866/PKU.WHXB201706151         中文摘要
Radiation Induced Synthesis of Amorphous Molybdenum Sulfide/Reduced Graphene Oxide Nanocomposites for Efficient Hydrogen Evolution Reaction
CAO Pengfei1, HU Yang1, ZHANG Youwei2, PENG Jing1, ZHAI Maolin1
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
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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.

Keywords: Molybdenum sulfide   Reduced graphene oxide   Radiation synthesis   Hydrogen evolution reaction   Volmer-Heyrovesy mechanism  
Received: 2017-05-03 Accepted: 2017-06-12 Publication Date (Web): 2017-06-15
Corresponding Authors: ZHAI Maolin Email:

Fund: The project was supported by the National Natural Science Foundation of China (11405168, 11505011).

Cite this article: CAO Pengfei, HU Yang, ZHANG Youwei, PENG Jing, ZHAI Maolin. Radiation Induced Synthesis of Amorphous Molybdenum Sulfide/Reduced Graphene Oxide Nanocomposites for Efficient Hydrogen Evolution Reaction[J]. Acta Phys. -Chim. Sin., 2017,33 (12): 2542-2549.    doi: 10.3866/PKU.WHXB201706151

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