Wavelength Role in Synthesis and Study of the Structure of Silver Nanoparticles Prepared by Pulsing Laser Ablation in Liquid

Abstract

Silver nanoparticles (NPs) were made using double-distilled deionized water (DDDW) and pulsing laser ablation in liquid (PLAL) with Q-switched technology (Nd:YAG) laser (energy: 80mJ, number of pulses: 500) at various wavelengths (1064nm and 532nm). The surface plasmon extinction (SPE) peaks were used to measure the PLAL process's formation quality. The SPE spectra showed a single sharp peak at about 400nm, suggesting that pure and spherical silver was produced. The formation of silver particles was verified by UV-vis spectrophotometer absorption results. According to the AFM findings, as the wavelength of the laser beam used for preparation increased, the average grain size of the particles decreased. Finally, SEM images pointing to the produced silver nanoparticles spherical in their shape, were shown. The elemental analysis and chemical characterization with energy-dispersive X-ray spectroscopy (EDX) were performed on the produced samples. This confirmed the high purity of the obtained samples and the existence of Ag NPs.