Citation: Min Li, Donge Wang, Jiahe Li, Zhendong Pan, Huaijun Ma, Yuxia Jiang, Zhijian Tian, Anhui Lu. Surfactant-assisted hydrothermally synthesized MoS₂ samples with controllable morphologies and structures for anthracene hydrogenation[J]. Chinese Journal of Catalysis, ;2017, 38(3): 597-606. doi: 10.1016/S1872-2067(17)62779-7 shu

Surfactant-assisted hydrothermally synthesized MoS₂ samples with controllable morphologies and structures for anthracene hydrogenation

Min Li ^a,b,c, ,
Donge Wang ^b ,
Jiahe Li ^b,c ,
Zhendong Pan ^b ,
Huaijun Ma ^b ,
Yuxia Jiang ^b,c ,
Zhijian Tian ^b,d ,
Anhui Lu ^a

a State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China;
b Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China;
c University of Chinese Academy of Sciences, Beijing 100049, China;
d State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, ChiZhendong nese Academy of Sciences, Dalian 116023, Liaoning, China

Received Date: 30 November 2016
Revised Date: 30 December 2016

Fund Project: This work was supported by the National Natural Science Foundation of China (21303186) and the Strategic Priority Research Program of the Chinese Academy of Sciences (XDA07020300).

MoS₂ samples with controllable morphologies and structures were synthesized using surfactant-assisted hydrothermal processes. The effects of surfactants (PEG, PVP, P123, SDS, AOT, and CTAB) on the morphologies and structures of MoS₂ samples were investigated. The results revealed that spherical, bulk-like, and flower-like MoS₂ particles assembled by NH₄⁺-intercalated MoS₂ nano-sheets were synthesized. The morphologies of the MoS₂ samples and their structures (including the slab length and the number of stacked layers) of MoS₂ nano-sheets in these samples could be controlled by adjusting the surfactants. Mono-dispersed spherical MoS₂ particles could be synthesized with PEG via the creation of MoS₂ nano-sheets with slab lengths shorter than 15 nm and fewer than six stacked layers. Possible formation mechanisms of these MoS₂ samples created via surfactant-assisted hydrothermal processes are proposed. Further, the catalytic activities of MoS₂ samples for anthracene hydrogenation were evaluated in a slurry-bed reactor. The catalyst synthesized with the surfactant PEG exhibited the highest catalytic hydrogenation activity. Compared with the other catalysts, it had a smaller particle size, mono-dispersed spherical morphology, shorter slab length, and fewer stacked layers; these were all beneficial to exposing its active edges. This work provides an efficient approach to synthesize transition metal sulfides with controllable morphologies and structures.
- Molybdenum sulfide,
- Surfactant-assisted,
- Controllable morphology,
- Mono-dispersed,
- Active edges,
- Anthracene hydrogenation
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Surfactant-assisted hydrothermally synthesized MoS₂ samples with controllable morphologies and structures for anthracene hydrogenation