Synthesis and tribological properties of MXene/TiO2/MoS2 nanocomposite

In this work, novel MXene/TiO2/MoS2 heterojunction of flower-like MoS2 decorated sheet-like MXenes were successfully fabricated by one-step hydrothermal approach using TiO2 as the precursor, and systematically investigated by a series of characterizations (e.g. XRD, Raman, SEM, and TEM analysis). Furthermore, the tribological behaviour of MXene/TiO2/MoS2 heterojunction in liquid paraffin were extensively examined a ball-on-disk tribometer. The effects of applied load and rotational speed were also investigated. Compared with MXenes/MoS2 nanocomposites, three-phase MXene/TiO2/MoS2 achieved better friction properties. Especially, when the mass ratio of MTM in base oil is 3wt%, the friction coefficient reaches the minimum value of 0.09. Additionally, the construction and excellent tribological properties of MXene/TiO2/MoS2 heterojunction would be beneficial for the design of novel nano-additives with 2D/2D structure for enhancing friction reduction and anti-wear, which also would expand their actual applications in the industry and agriculture