Study the Effect of Different Liquid Media on the Synthesis of Alumina (Al₂O₃) Nanoparticle by Pulsed Laser Ablation Technique

This work was devoted for production of alumina (Al₂O₃) nanoparticles via PLAL technique from a solid alumina target immersed in different solutions Distilled Water (D.W) as well as in ethanol in order to study the effect of these different solutions on the optical properties and structure of Al₂O₃ nanoparticles. The controllability of particle size and size distribution is shown in this paper to be dependent upon the type of media and it proved that the peak absorption spectrum of samples produced in ethanol is lower than that produced in water. Thus it implies that the ablation efficiency in ethanol is lower, but in the same time it ensures that its oxides are not formed in ethanol due to prohibition of ethanol surrounding media form oxidation. The produced NPs were characterized via many tests such as UV-visible (UV-Vis.) and Atomic Force Microscope (AFM).