In this work, TiO2@MoS2 heterojunction of TiO2 nanoparticles decorated MoS2 nanospheres were successfully fabricated by one-step hydrothermal approach using TiO2 as the precursor, and systematically investigated by various characterization methods (e.g. XRD, SEM, TEM and XPS analysis). Moreover, the tribological experiments of liquid paraffin contained TiO2, MoS2, and TiO2@MoS2 nano-additives were comparatively investigated by a ball-plate wear instrument, which tribological variables include applied load and rotational speed. TiO2@MoS2 as an additive in base oil exhibited superior antifriction and wear resistant among various nano-additives. At the optimal conditions, 5%-TiO2@MoS2-paraffin samples show the lower friction coefficient (~0.08) compared with pure paraffin, and paraffin contained TiO2 and/or MoS2. Additionally, the excellent anti-friction and wear-resistant of TiO2@MoS2 in base oil would be beneficial for the design of novel MoS2-based nano-additives for improving tribological performance in the industry and agriculture.
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