Electrochemical and physicochemical properties of zinc(II) nitrate hexahydrate/urea/ethylene glycol ternary composite deep eutectic solvents

In this study, a ternary deep eutectic solvents (TDESs) based on zinc nitrate hexahydrate (ZNH) and HBDs urea (U) and ethylene glycol (EG) with various molar ratios by heating approach was synthesized. Various characterization techniques such as cyclic voltammetry (CV), linear sweep voltammetry analysis (LSV), ionic conductivity, dynamic viscosity, and Fourier transform infrared spectroscopy (FTIR), and refractive index tests were employed. In this study, TDESs with ZNH-U-EG (1:3:4 ratio) resulted in a high reversible responsiveness, high ionic conductivity (5.18 mS/cm), smaller refractive index (1.451), and lower dynamic viscosity values of 690, 471, 262, 153, and 90 millipascal (mPa s) at shear rate values of 20, 30, 60, 100, and 200 (s⁻¹), respectively. The newly created TDES have the potential to serve as solvents.