AP0867 Synthesis and Characterization of Metamaterials from Beetroot Juice and Metal Salt Solutions

Abstract

The study involved creating a unique metamaterial using a reproducible organometallic complex made from natural and affordable ingredients. The process included creating the material through sedimentation by adding beetroot juice to an ionic aqueous solution containing CuSO₄.5H₂O and/or AgNO₃ compounds. Different weight percentages of the compounds were used (100% Cu, 80% Cu + 20% Ag, 60% Cu + 40% Ag, 40% Cu + 60% Ag, 20% Cu + 80% Ag, and 100% Ag wt.%).The material was analyzed using Differential Scanning Calorimetry (DSC), Fourier Transform Infrared spectroscopy (FTIR), and UV-Vis spectroscopy. The presence of silver ions made the sediment less stable and led to more ligand deposition, higher reflectance, and reduced absorbance and transmittance. The band gap widened with the highest value for the sample with 20% Cu + 80% Ag. Higher silver ion concentration resulted in a negative spectrum of refractive index, imaginary electric permittivity, and optical conductivity.