Bhat, D.K.Kumar, S.P.Shenoy, U.S.2026-02-042024International Journal of Heat and Fluid Flow, 2024, 106, , pp. -0142727Xhttps://doi.org/10.1016/j.ijheatfluidflow.2024.109321https://idr.nitk.ac.in/handle/123456789/21201Enhancing the thermal properties of conventional heat transfer fluids represents a significant technological challenge. In this context, nanofluids have emerged as a promising solution, emphasizing the need for simpler and more convenient synthesis methods. This study introduces a novel, eco-friendly, one-step synthesis method, overcoming the complexities of traditional two-step processes. The resulting nanofluid generated by using ribose as a reducing agent, consists of cuprous oxide particles at the nano scale, and the fluid itself exhibits Newtonian behavior. With an impressive thermal conductivity of 3.052 W m−1 K−1, the nanofluid exhibits stability for a noteworthy 4-month duration, achieved through the strategic addition of sodium lauryl sulfate. This breakthrough positions the nanofluid as a compelling option for diverse applications in thermal energy storage and management. © 2024 Elsevier Inc.Heat storageHeat transferNanofluidicsSodium dodecyl sulfateSulfur compoundsThermal conductivityEnhanced thermal conductivityHeat transfer fluidsIn-situ synthesisNanofluidsNewtonian nanofluid, riboseNewtoniansSimple++Sodium lauryl sulphateSynthesis methodTechnological challengesCopper oxides