▎ 摘　　要

In the present research work, we investigated the effect of loading mass concentrations (0.05%, 0.15%, and 0.25 mass %) and temperature (10-50 degrees C) on the thermal properties of graphene oxide-ethylene glycol (GO-EG) nanofluids. A two-step approach was adopted to prepare the GO-EG nanofluids with different mass proportions without any surfactant. The thermal kinetic analysis was performed by modulated DSC and TGA. Thermal stability and particle size distribution of the nanofluids were monitored by using UV-visible spectroscopy and dynamic light scattering. The experimental findings on the thermal transport characteristics of the as-prepared nanofluid samples are influenced by loading mass concentration, increasing temperature because of the high relative area of dispersed nanoparticles at higher particle concentration, dispersion quality of nanofluids. The thermal conductivity (TC) of GO-EG nanofluid shows an enhancement of 36.72% for (sample no. 3, i.e., GO 3) and shows a semi-linear dependence profile between temperature and TC, with increasing mass concentration due to the decrease in interfacial thermal resistance between GO and EG. The observed results are in good agreement with previously reported literature and reveal the promising prospect for usage as a state-of-the-art heat transport fluid in the coolant industry.