One‐step hydrothermal synthesis of double core‐shell oxygen‐incorporated molybdenum disulfide and its tribological properties

Abstract

Using a simple one‐step hydrothermal method, benzyl triethylammonium chloride was used to assist the synthesis of double core‐shell oxygen‐incorporated molybdenum disulfide (DB‐O‐MoS₂), and its friction and wear properties were measured on the MRS‐10A four‐ball testing machine. They were characterised by X‐ray diffraction, scanning electron microscope, transmission electron microscope, thermogravimetry, Brunner−Emmet−Teller and Fourier transform infrared spectroscope. Friction and wear properties of DB‐O‐MoS₂ were measured at different concentrations. The results showed that the tribological properties of SN 5W‐40 base oil have been improved by adding the DB‐O‐MoS₂ as lubricant additives. The possibility of DB‐O‐MoS₂ mechanisms by which the nanolubricants improved the tribological properties were put forward. Therefore, research on DB‐O‐MoS₂ is beneficial to the development of new engine lubricant additives.