Preparation and characterization of gelatin mediated silver nanoparticles by laser ablation

We successfully prepared colloidal silver nanoparticles (Ag-NPs) using a nanosecond pulsed Nd:YAG laser, λ = 532 nm, with laser fluence of approximately about 0.6 J/pulse, in an aqueous gelatin solution. The size and optical absorption properties of samples were studied as a function of the laser repetition rates. The results from the UV–vis spectroscopy demonstrated that the mean diameter of Ag-NPs increase with the laser repetition rate increases. The Ag-NPs have mean diameters ranging from approximately 9 nm to 15 nm. Compared with other preparation methods, this work is clean, rapid, and simple to use.

Research highlights▶ To date, no approach has been carried out on the preparation of Ag-NPs using gelatin as a stabilizer in the PLA method. ▶ In this paper, we used the PLA method to focus on the preparation of Ag-NPs from silver plating in water using gelatin as a stabilizer. ▶ The effect of the laser-pulsed repetition rate on size of Ag-NPs is studied.