HOJABRI Alireza Islamic Azad University

Characterization of Silver Nanoparticles prepared by Laser Ablation in Distilled Water

Co-authors HAJAKBARI Fatemeh, DEBASHI SHOREH Maryam

Silver nanoparticles (Ag-NPs) due to the chemical, physical, biological and optoelectronic properties have applications in many scientific areas. In this work Ag-NPs were synthetized by the pulsed laser ablation of a high purity silver target in distilled water. Pulsed Nd:YAG laser with wavelength of 1064 nm and pulse repetition rate of 1, 3 and 12 kHz were employed to irradiate the silver target in water. Effect of laser pulse repetition rate, on structure, morphology and nanoparticle size was studied by different analysis such as XRD, DLS and UV-Visible absorption spectrum. The results show that the spherically (Ag-NPs) sizes are in the range of 13-35 nm in distilled water and by enhancing of laser pulse repetition rate, the size of nanoparticles decreases and nanoparticle surface plasmon absorption peak intensity is increased and shifted toward lower wavelength. Also, using ultrasonic bath the (Ag-NPs) sizes is reduced.

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