MoS2 hollow microspheres used as a green lubricating additive for liquid paraffin

摘要

Molybdenum disulfide (MoS2) hollow microspheres were prepared via a hydrothermal method, which were characterized by XRD, SEM, TEM and UV-vis spectroscopy. The tribological performances of liquid paraffin (LP) mixtures containing these hollow microspheres and the following photo-catalytic degradation behaviors of LP promoted by the worn MoS2 powders were investigated. The results indicate that 0.50 wt% of MoS2 hollow microspheres in LP can reduce the friction coefficient of the mixture remarkably, and the photo-catalytic degradation degree of LP also reaches a satisfactory level. MoS2 serves as both lubricating additives and photo catalysts at the different life stages, and related mechanisms have been discussed, which suggests potential values in the design of novel and sustainable lubricating systems.