One-step synthesis of carbon sphere@ 1 T-MoS2 towards superior antiwear and lubricity

A novel carbon sphere (CS)@metallographic molybdenum disulfide (1 T-MoS2) hybrid was prepared by a straightforward one-step hydrothermal method and its synergistic effect on the tribology of polyethylene glycol 200 (PEG200) was reported. Systematical characterizations exhibited 1 T-MoS2 sheets were evenly anchored on the CS surface. Tribological results showed the friction coefficient of pure PEG200 oil decreased by 43% with adding 0.3125 wt% CS@ 1 T-MoS2. Optical images showed the diameters of wear marks were significantly reduced from 1860 mu m for neat base oil to 880 mu m for CS@ 1 T-MoS2. It was believed that the synergy between CS and 1 T-MoS2 played the crucial role in the friction reducing and anti-wear. Therefore, this work provides a facile approach to preparing lubricating additives by decorating 1 T-MoS2 on CS.