Preparation and Characterization of Alumina Nanoparticles in Deionized Water Using Laser Ablation Technique

Abstract

Al2O3nanoparticles were synthesized using laser ablation of an aluminum (Al) target in deionized water. Nd:YAG laser, emitted the light at a wavelength of 1064 nm, was used as a light source. The laser ablation was carried out at different energies of 1, 3, and 5 J. The structure of ablated Al particles suspended in deionized water was investigated using X-ray diffraction (XRD). The XRD patterns revealed that the ablated Al particles transformed intoγ-Al2O3. The morphology of nanoparticles was investigated by field emission scanning electron microscopy (FE-SEM). The FE-SEM images showed that most of the nanoparticles obtained from all the ablated laser energies have spherical shape with a particle size of less than 100 nm. Furthermore, it was observed that the particle size increased with increasing the laser energy. The absorption spectra of Al2O3nanoparticles suspended in deionized water were recorded at room temperature using UV-visible spectroscopy. The absorption spectra show a strong peak at 210 nmarising from the presence of Al2O3nanoparticles. The results on absorption spectra are in good agreement with those investigated by XRD which confirmed the formation of Al2O3nanoparticles during the laser ablation of Al target in deionized water.

Influence of ultrasonication energy on the dispersion consistency of Al2O3–glycerol nanofluid based on viscosity data, and model development for the required ultrasonication energy density

“…The spectra pattern of the nanofluid presented a strong absorption band at around 230 nm wavelength, after which the spectra pattern decreased in a monotonic manner with increasing scanning wavelength. The spectra pattern and the strongest peak wavelength correspond to the results previously presented by Piriyawong et al[33] on Al 2 O 3 dispersed in deionised water.Figure 5(d)À(f) confirms that the dispersion follows the Beer's law (i.e. the absorbance increases as the nanoparticle concentration increases).Using the method of dynamic light scattering (DLS) in the Zetasizer Nano ZS device, the in situ particle size of the Al 2 O 3 was measured in the glycerol.…”

Dependence of Lattice Distortion and Dielectric Response of Zinc Aluminate on Milling Frequency

“…The diffraction peaks corresponding to (220), (311), (422), (511) and (440) indices reveal the cubic structure of ZnAl 2 O 4 as reported in previous studies [20,21]. The presence of shoulder peaks located at 31.65° and 36.55° in unmilled sample (A) indicates that reactants are not completely incorporated with each other without milling because ZnAl 2 O 4 as well as ZnO and Al 2 O 3 have characteristic peaks at the same level of 2θ [22,23].…”

Preparation and Characterization of Alumina HDPE Composites

“…Alumina nanoparticles can be considered as one of the most beneficial metal oxides with outstanding physical and chemical properties in analytical chemistry. Alumina (Al 2 O 3 ) has several useful properties such as high insulation, good thermal stability, high strength and hardness, nontoxicity, good chemical resistivity as well as it's low-cost compared to other metal oxide nanoparticles [7][8][9][10]. Therefore, the growing demand for developing new alumina PNCs for functional applications motivated scientists and engineers to conduct several studies in this research field [11].…”