Preparation, characterization and tribological properties of ultrathin MoS₂ nanosheets

In this work, ultrathin MoS 2 nanosheets were prepared via a solid-state reaction route. The structure and morphology of the obtained samples were characterized by x-ray diffraction, transmission electron microscopy and scanning electron microscopy. The influences of the reaction durations and raw materials molar ratio on the sizes and morphologies of the MoS 2 nanostructures were discussed. And according to the experimental results, a formation mechanism of the ultrathin MoS 2 nanosheets was proposed. The tribological behaviors of the synthesized MoS 2 samples as additives in paraffin oil were determined on an UMT-2 tribometer. The experimental results indicated that the obtained samples possessed great anti-friction and anti-wear properties as lubrication additive in paraffin oil.