Fabrication and Characterization of Al2O3 Nanoparticles Prepared via Pulse Laser Ablation Method

Abstract

Aluminum oxide () nanoparticles were synthesized using the pulse laser ablation method in liquid with a laser energy of 900 mJ . Aluminum (Al) plate was immersed in deionized water and then ablated by an Nd-Yag laser with wavelength 1064 nm. The size, shape, and structural properties of the  nanoparticles were analyzed using scanning electron microscopy (SEM) imaging and X-ray diffraction (XRD). UV-Vis spectroscopy was employed to determine the optical properties of the prepared nanomaterails.  SEM images revealed that the produced nanoparticles had a spherical shape, and the particle size was under 100 nm. XRD analysis showed that the crystallinity of the nanoparticles improved with time. UV-Vis spectroscopy measurements indicated a clear absorption peak at a wavelength of 211 nm, with an energy gap (Eg) value of 5.3 eV. These results suggest that the pulse laser ablation in water technique is a simple, cost-effective, scalable, and environmentally friendly method for synthesizing nanoparticles, particularly for applications in optoelectronics and photocatalysis.