PERPRATION OF COPPER OXIDES NANOSTRUCTURED VIA PULSED LASER ABLATION IN LIQUIDS AND THEIR CHARACTERIZATION

Abstract

In present work, novel and one-step process, called Pulsed Laser Ablation in Liquids (PLAL) technique was used to synthesis a high purity, stable and less agglomeration nanostructure semiconductors. Nanostructure copper oxides (cupric and cuprous oxides) were synthesized using Nd: YAG pulsed laser with wavelength of 532 nm. The effect of the oxidizing media on the composition, morphology and optical properties of the synthesized nanomaterials produced by PLAL were studied using XRD, EDS, FE-SEM, TEM, FTIR and UV-Vis spectrophotometer. The effect of annealing temperature on the synthesized nanostructure copper oxides in deionized water was also studied. The results showed that the produced samples of Cu/Cu2O nanostructure were converted predominantly into CuO nanostructure at annealing temperature of 300 ºC. As the annealing temperature increases from 300 to 900 ºC, the grain sizes of CuO nanostructure increased from 9 ± 1 to 26 ± 1 nm. The study revealed that the band gap and other optical properties of nanostructure Cu/Cu2O were changed due to post annealing.