Difference energies and wavelengths using to study Pd nanoparticles by Nd –YAG laser ablation in water.

In this work, palladium metal nanoparticles (PdNPs) were prepared by pulsed ablation technique in deionized water (DIW) and a pulsed Nd-YAG laser with two wavelengths (532 nm - 1064 nm) was used and three energies were used for each wavelength (800 mJ - 900mJ -1000mJ) with a number of pulses (500 pulse) and pulse width (10 ns) and a frequency interval (6 Hz). The optical, structural and morphological properties of palladium nanoparticles (PdNPs) were studied by means of several (uv-Visible -XRD-SEM) assays. Comparison between the results based on the difference in wavelength and laser energy and the effect of the change in wavelength and energy on the properties of palladium nanoparticles (PdNPs), The resulting particles appeared in a spherical shape and tended to agglomerate and form what looked like clusters, and their size ranged between several nanometers and 30 nanometers. The particle grain size of palladium nanoparticles ranged between (17nm) at (1000mJ) at a wavelength (1064nm) and (25nm) at (800mJ) at a wavelength (532nm). [ABSTRACT FROM AUTHOR]