This article explores the successful green synthesis of zinc oxide (ZnO) nanoparticles with a sustainable approach without using toxic chemicals or external stabilizers. The synthesized ZnO nanoparticles were characterized, and the investigation bridged the gap among physical, morphological, and optical properties. X-ray diffraction (XRD) analysis indicated the successful formation of a hexagonal wurtzite ZnO structure with an average crystallite size of 39.89 nm, representing high crystallinity and phase purity. The band gap energy was approximately 3.79 eV. UV-Visible results represented a strong optical absorption peak at 327 nm, proving the optical quality of the particles and exhibiting... More >

In the present work, copper oxide (CuO) nanoparticles have been synthesized by a greener and more sustainable approach from neem (Azadirachta indica) leaf extract, which acts as a natural reducing and stabilizing agent. The phase composition, structural, and morphological features of the nanomaterial were thoroughly characterized by XRD, FTIR, UV-Vis spectroscopy, FESEM, TEM, and EDS. X-ray diffraction confirmed the monoclinic formation of CuO with an average crystallite size of 16.68 nm, while FTIR spectra showed Cu-O lattice vibrations and relevant functionalities of phytochemical capping. Optical studies exhibited a unique absorption peak at 350 nm and direct band gap of 2.7 eV that indic... More >