Nano MoS 2 (5-10) nm have been successfully synthesized using wet chemical synthesis in an aqueous solution employing ammonium molybdate, citric acid, and ammonium sulfide as the reactants. The high-speed homogenizer played a vital role to control size in the narrow range of (5-10) nm. XRD pattern reveals the broadening in peak intensity with the enhanced crystallinity of (002) peak at 10.4°, having a crystallite size 2 nm. TEM and EDX studies elucidate the presence of average particle size in the range of (5-10) nm with elemental molybdenum and sulfide ion. Our work has provided easy and convenient technique to synthesize nano MoS 2 for development of nano lubricant with reduced wear and coefficient of friction.