MoS2 nanoparticles grown on carbon nanomaterials for lubricating oil additives
Kuiliang Gong, Wenjing Lou, Gaiqing Zhao, Xinhu Wu, Xiaobo Wang
Abstract
Abstract In this study, the nanocomposites of MoS 2 nanoparticles (NPs) grown on carbon nanotubes (MoS 2 @CNT), graphene (MoS 2 @Gr), and fullerene C60 (MoS 2 @C60) were synthesized, characterized, and evaluated for potential use as lubricant additives. By using the benefit of the synergistic effect between MoS 2 and carbon nanomaterials (CNMs), these nanocomposites can be well dispersed in polyalkylene glycol (PAG) base oil and show superior stability compared with pure MoS 2 NPs. Moreover, the dispersions of MoS 2 @CNT, MoS 2 @Gr, and MoS 2 @C60 added in PAG have noticeably improved friction reducing and antiwear (AW) behaviors at elevated temperature for comparison with that of PAG and PAG containing CNT, Gr, C60, and MoS 2 NPs, respectively. The enhanced lubricating properties of these nanocomposites were also elucidated by exploring the tribofilm formed on the disc.