ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Application of nano-molybdenum disulfide additives for improved performance of various commercial oils

Imran Ali, Alexandr Viktorovich Shchegolkov, Zahiwat Murtada Mohmmed Attia, Aleksei Viktorovich Shchegolkov, Maxim Chumak Alexandrovich, Sadykova Lyazat Anatolievna, and Abdulaziz Bentalib

Department of Chemistry, Jamia Millia Islamia (Central University), New Delhi, India

E-mail: drimran.chiral@gmail.com

Received: 26 January 2025  Accepted: 20 May 2025

Abstract:

One of the main challenges in internal combustion engines is the significant energy loss due to friction. An improved method has been developed to improve the performance of commercial engines by adding molybdenum disulfide to three commercial oils (ZIC, Shell and Mannol). The paper presents the morphological and technical properties of the mechanically activated MoS₂ used as an additive in engine oils. The best concentrations of molybdenum used were 0.03, 0.05 and 0.07% for ZIC, Shell and Mannol. The values of the difference in the running-in time, running-in wear, attitude factors friction, friction coefficient and total friction with molybdenum disulfide for ZIC were 2.97 to 3.10, 2.01 to 2.43, 1.75 to 1.88, 0.05 to 0.08 and 6.0 to 6.19. According to these results, the improvements in the oils were in the order of ZIC > Shell > Mannol. The reduction in the interlayer interactions in MoS₂ improved the lubricating property of 2D nanomaterials. The natural lattice mismatch and periodic structure formation (during mechanical activation) enabled a low-friction state by considering MoS₂ lattice constant as 0.315 nm. The mechanical activation of MoS₂ equalized its dimensions and enabled its effective spreading in engine oil; aiding in the improvement of the engine performance and saving energy in transport and industry.

Keywords: Asphalt, Bitumen; Biodiesel; Oils; Organic Molecules in Materials Science; Transition Metal Dichalcogenides; Tribology; Engine oils improvement; Molybdenum disulfide; Mechano-activation; Tribology and wear; Internal combustion engine

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-025-04139-9

Chemical Papers 79 (8) 5465–5481 (2025)