Abstract

Bioactive copper oxide (CuO) nanoparticles were synthesized through a combustion method using Vitis vinifera extract, and the effects of temperature on CuO calcination were shown. The structural, morphological, compositional, optical, and thermogravimetric properties were investigated. Powder X-ray diffraction confirmed the successful formation of crystalline nanoparticles with a crystallite size of 18.7 nm, and FTIR analysis confirmed the formation of the CuO phase. The morphological images revealed nanosphere-like structures, while elemental analysis confirmed the uniform distribution of Cu and O throughout the samples. TG/DTA analysis revealed the thermal stability, phase transformations, and temperature-dependent weight loss of the samples. The direct band gap energies are determined using the Tauc plot of the UV-Vis DRS data. Zeta-potential analysis was used to investigate the surface-charge characteristics and colloidal stability. These findings indicate the formation of microsphere-like assemblies composed of CuO nanoparticles. This study systematically evaluates multiple physicochemical properties to provide insight into the physicochemical characteristics that may contribute to improved gas adsorption, charge transfer, and sensing performance.

Keywords

CuO Nanoparticles, Bio-Fuel, Combustion Synthesis, Physico-Chemical Studies,

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