Preparation of Gold Nanoparticles by Pulsed Laser Ablation in NaOH solution

Abstract

Noble metal gold NPs were synthesized by pulsed (Q-switched, 1064-Nd: YAG,10 ns pulse duration and E=750 mJ) laser ablation of gold metal plates immersed in double distilled and deionised water DDDW and other aqueous solution of NaOH with various concentrations. Absorbance spectra of the produced nanoparticles solution was measured by uv-vis spectrophotometer which show sharp and single peaks 525 nm, indicating the production of pure and spherical Au NPs with average size of 51 nm, respectively. The morphology and size was estimated by SEM.