2023/11/04 by Desta, Soressa, Kena, Senbeto, Chewaka, Misganu
#Copper Oxide #Optical Band Gap Energy #Structural and Optical Properties
paper · doi:10.20372/star.v11i4.01
This work aims to study the structural and optical properties of copper oxide (CuO) nanoparticles synthesised by the co-precipitation method using copper (II) chloride dihydrate (CuCl2.2H2O) as precursors and NaOH as a stabilising agent. The prepared sample was sintered at 600 oC for 5 h. The XRD result showed that the synthesised sample has a single-phase monoclinic structure and an average crystal size of 12.85nm. Scanning electron microscopy (SEM) micrographs showed that the grains of the sample were inspherical, uniformly agglomerated. The optical parameters were measured using the UV-vis spectroscopic technique. Then the UV-vis results showed that the absorption peak was found to be at around 272 nm, corresponding to the optical band gap energy of 3.59 eV. CuO has many potential applications, such as photocatalysts, solar energy conversion, sensing applications, supercapacitors, electrodes for lithium-ion batteries, and photoconductive and photothermal applications.