Effect of solvent on the morphology of MoS2 nanosheets prepared by ultrasonication-assisted exfoliation

The MoS2 nanosheets are prepared via liquid-phase exfoliation route. Bulk MoS2 powder is exfoliated by ultrasonication-assisted method with the aid of different solvents. The effect of solvents used on the morphology of the MoS2 nanosheets is investigated. The exfoliated material is analysed by using scanning electron microscopy, transmission electron microscopy, Fourier-transform infrared spectroscopy and X-ray diffractometry. The MoS2 nanosheets exfoliated by using NMP-water mixture showed the better morphology than that exfoliated with the other solvent mixtures.