Amine-functionalized MoS2–hBN hybrid nanoparticles for enhanced tribological and thermal performance of gasoline engine oil
Nagarajan T. Markandan K. Walvekar R. Azat S. Khalid M.
June 2026Elsevier Ltd
Tribology International
2026#218
Amine-functionalized MoS2–hBN hybrid nanoparticles were synthesized via a rapid, energy-efficient microwave-assisted route and assessed as multifunctional additives for SAE 5W40 engine oil. Microwave-assisted growth promoted uniform MoS2 nucleation on hBN, yielding a stable, well-dispersed hybrid with strong interfacial synergy. At an ultralow loading of 0.01 wt%, the nanolubricant achieved a 50.8 % reduction in friction coefficient and a 33.3 % decrease in wear scar diameter compared to the base oil. In addition, the oxidation induction time and thermal conductivity improved by 25.6 % and 20 %, respectively. These enhancements were attributed to the formation of a dense, load-bearing MoS2–hBN tribofilm, improved heat dissipation, and amine-assisted antioxidant activity. These results demonstrate a scalable and energy-efficient strategy for high-performance engine oil additives.
Amine-functionalization , Hybrid nanocomposite , Oxidation analysis , Thermal conductivity , Tribology
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Department of Chemical & Petroleum Engineering, Faculty of Engineering, Technology & Built Environment, UCSI University, Kuala Lumpur, 56000, Malaysia
Department of Chemical and Process Engineering, University of Strathclyde, G1 1XL, United Kingdom
University Centre for Research and Development, Chandigarh University, Punjab, Mohali, 140413, India
Laboratory of engineering profile, Satbayev University, Almaty, Kazakhstan
Materials and Manufacturing Research Group, James Watt School of Engineering, University of Glasgow, Glasgow, G12 8QQ, United Kingdom
Sunway Centre for Electrochemical Energy and Sustainable Technology (SCEEST), School of Engineering and Technology, Sunway University, No. 5 Jalan Universiti, Bandar Sunway, Selangor, Petaling Jaya, 47500, Malaysia
Faculty of Engineering, Manipal University, Rajasthan, Jaipur, 303007, India
Department of Chemical & Petroleum Engineering
Department of Chemical and Process Engineering
University Centre for Research and Development
Laboratory of engineering profile
Materials and Manufacturing Research Group
Sunway Centre for Electrochemical Energy and Sustainable Technology (SCEEST)
Faculty of Engineering
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