物理化学学报2017，Vol.33Issue(12)：2542-2549,8.DOI:10.3866/PKU.WHXB201706151
无定型钼硫化物/还原氧化石墨烯的辐射合成及其电催化析氢性能
Radiation lnduced Synthesis of Amorphous Molybdenum Sulfide/Reduced Graphene Oxide Nanocomposites for Efficient Hydrogen Evolution Reaction
摘要
Abstract
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 theγ-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 excelent 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 excelent long-time stability during the evaluation for HER.关键词
钼硫化物/还原氧化石墨烯/辐射还原/电催化析氢/Volmer-Heyrovesy机理Key words
Molybdenum sulfide/Reduced graphene oxide/Radiation synthesis/Hydrogen evolution reaction/Volmer-Heyrovesy mechanism分类
化学化工引用本文复制引用
曹朋飞,胡杨,张有为,彭静,翟茂林..无定型钼硫化物/还原氧化石墨烯的辐射合成及其电催化析氢性能[J].物理化学学报,2017,33(12):2542-2549,8.基金项目
The project was supported by the National Natural Science Foundation of China (11405168, 11505011).国家自然科学基金(11405168, 11505011)资助项目 （11405168, 11505011）
