Effect of laser energy and pulses on size and concentration of gold nanoparticles in DDDW by LALP method

Abstract EN

The size and the concentration of the gold nanoparticles (GNPs) synthesized in double distilled deionized water (DDDW) have been found to be affected by the laser energy and the number of pulses.

The absorption spectra of the nanoparticles DDDW, and the surface plasmon resonance (SPR) peaks were measured, and found to be located between (509 and 524)nm using the UV- Vis spectrophotometer.

SPR calculations, images of transmission electron microscope, and dynamic light scattering (DLS) method were used to determine the size of GNPs, which found to be ranged between (3.5 and 27) nm.

The concentrations of GNPs in colloidal solutions found to be ranged between (37 and 142) ppm, and measured by atomic absorption spectroscopy (AAS).