Experimental and molecular dynamic insights on the thermophysical properties for MWCNT-Phosphonium based eutectic thermal media

In this study, a thermal media is synthesized by mixing hydrogen bond acceptor (HBA) [Methyltriphenylphosphonium bromide (MTPB)] salt with donor (HBD) [ethylene glycol] at molar ratio of 1:4. Thereafter the corresponding nanofluid was prepared dispersing 0.02 wt% Multi-Walled Carbon Nanotube (MWCNT) having diameter 10–30 nm in base fluid. Prior to dispersion, shape and morphology MWCNT were ascertained using both Field Emission Scanning Electron Microscope (FESEM) Transmission (FETEM). The crystallinity functional groups investigated X-ray Powder Diffraction meter (XRD) Fourier Transform Infrared Spectroscopy (FTIR). stability initially performed visual observation followed zeta potential measurements. Thermogravimetric analysis (TGA) check temperature close 500 °C heating rate 10 °C/min under nitrogen environment. Thermophysical properties such as density, viscosity, conductivity, specific heat measured range 25–85 °C. It evident from experimental data that viscosity density decrease an increase temperature. On contrary, conductivity found This due induced Brownian motion nanoparticle, which results higher kinetic energy high penultimate section, Molecular Dynamic (MD) simulations compare validate nanofluid.