Green synthesis, morphological and optical studies of CuO nanoparticles

CuO nanoparticles were synthesized by environmentally benign green route with copper acetate precursor using Caloropis procera leaf extract. The CuO nanoparticles produced by the process after calcination at 700 degrees C were characterized by X-ray diffraction (XRD) and the pattern reveals monoclinic structure. The cylindrical shape of CuO nanoparticles were observed by scanning electron microscopy. FT-IR spectra confirmed the adsorption of surfactant molecules at the surface of CuO nanoparticles and presence of Cu-O bonding. Thermal studies were carried out by thermogravimetric and deferential thermal analysis techniques. Raman spectra, is used to explore the local atomic arrangements and vibrations of CuO nanoparticles. In addition, UV-Visible spectra were used to estimate the band gap energy of CuO nanoparticles. (C) 2017 Elsevier B.V. All rights reserved.