Studies of Structural and Optical Properties of Copper oxide (CuO) Nanoparticles
DOI:
https://doi.org/10.20372/star.v11i4.01Keywords:
Structural and Optical Properties, Copper Oxide, Optical Band Gap EnergyAbstract
Nanoparticles of copper oxide (CuO) synthesized by the co-precipitation method with copper (II) chloride dihydrate (CuCl2.2H2O) as a precursor and sodium hydroxide (NaOH) as a stabilizing agent are the subject of this investigation into their optical and structural characteristics. A 5-hour sintering process was used on the prepared sample at 600 oC. The synthesized sample exhibited a single-phase monoclinic structure with an average crystal size of 12.85 nm, as revealed by the XRD result. Micrographs taken using scanning electron microscopy (SEM) revealed that the sample's grains were uniformly agglomerated and not round. The UV-vis spectroscopy method was used to measure the optical properties. The absorption peak was determined to be at around 272 nm, which corresponds to an optical band gap energy of 3.59 eV, according to the UV-vis measurements. A few examples of CuO's numerous possible uses include photocatalysts, solar energy converters, sensing devices, supercapacitors, lithium-ion battery electrodes, and photothermal and photoconductive uses.
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