Comparison between properties of Ag and Au nanoparticles

Ag and Au nanoparticles were synthesized by pulsed laser ablation of silver and gold metal plates immersedin distilled water. In this work, the effect of the laser pulse fluence on the production of nanoparticles prepared by pulsedlaser ablation is investigated. The synthesized nanoparticles are characterized by using UV–Visible absorptionspectroscopy, transmission electron microscopy, dynamic light scattering and room temperature photoluminescence. TheUV–Visible absorption spectra of the Ag and Au nanoparticles show sharp absorptions in the visible regions due tosurface plasmon resonance oscillations. It is found that all samples exhibit photoluminescence emission, at roomtemperature, in the UV–Visible region, due to the recombination of electrons with holes.

کلیدواژه ها:

Ag nanoparticles ، Au nanoparticles ، Pulsed laser ablation ، Surface plasmon resonance