Ionic liquid assisted hydrothermal synthesis of hollow vesicle-like MoS2 microspheres

Materials Letters, Volume 66, Issue 1, 1 January 2012, Pages 236–238
Ionic liquid assisted hydrothermal synthesis of hollow vesicle-like MoS2 microspheres
Ning Li a
Yongming Chai a, b
Yanpeng Li a, b
Zhe Tang a
Bin Dong a
Yunqi Liu a, b
Chenguang Liu a, b
a State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao 266555, PR China
b Key Laboratory of Catalysis, China National Petroleum Corp. (CNPC), China University of Petroleum (East China), Qingdao 266555, PR China
Abstract
Researchers prepared MoS₂ microspheres with hollow vesicle-like structure using hydrazine solution with (NH₄)₂MoS₄ as the precursor. The reaction process was assisted by a convenient ionic liquid (1-butyl-3-methylimidazolium chloride) with the hydrothermal method at 200 °C for 24 h.
They prove that the MoS₂ microspheres had uniform spherical morphology with the diameter of 1–2 μm.  They also show that the hollow vesicle monomers on the surface of microspheres were structured with multi-layer of MoS₂, whose d spacing was 1.0 nm.  They propose a tentative formation mechanism for the growth process of the MoS₂ microspheres with hollow vesicle-like structure.
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