Citation: WANG Hui, ZOU De-Chun. Polyol-Mediated Synthesis of MoS₂ Nanosheets Using Sulfur Powder as the Sulfur Source[J]. Acta Physico-Chimica Sinica, ;2017, 33(5): 1027-1032. doi: 10.3866/PKU.WHXB201702081 shu

Polyol-Mediated Synthesis of MoS₂ Nanosheets Using Sulfur Powder as the Sulfur Source

WANG Hui ^1, ,
ZOU De-Chun ^1,2

1.
Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, National Center for Nanoscience and Technology, Beijing 100083, P. R. China;
2.
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China

Received Date: 23 November 2016
Revised Date: 6 February 2017

Fund Project: The project was supported by the“Thousand Talents”Program of China for Pioneering Researchers and Innovative Teams, National Natural Science Foundation of China (51573004, 91333107), and Natural Science Foundation of Beijing, China (Z160002).

MoS₂ nanosheets are prepared with sulfur powder and Na₂MoO₄ by a one-pot two-phase method at 170－200 ℃ for 8 h. In addition, a three-step growth mechanism based on the aggregation and coalescence model is proposed. The reassembly of sulfur powder ensures the transformation from sulfur powder to H₂S to reduce Na₂MoO₄ and plays a key role in the successful preparation of MoS₂ nanosheets. The as-prepared MoS₂ nanosheets are rich in unsaturated sulfur atoms, probably resulting from the dislocation cores of the MoS₂ nanosheets, which have been found to be beneficial for hydrogen evolution reaction catalysis. The method and growth mechanism adopted in this study may be applied to other transition metal dichalogenides for similar structures. The facile and green method provides an alternative for the preparation of MoS₂ nanosheets.
- MoS₂ nanosheet,
- Sulfur powder,
- Aggregation and coalescence model,
- Ethylene glycol,
- Two-phase method
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Polyol-Mediated Synthesis of MoS₂ Nanosheets Using Sulfur Powder as the Sulfur Source