Ultrasmall, Ligand-Free Ag Nanoparticles with High Antibacterial Activity Prepared by Pulsed Laser Ablation in Liquid

Figure 3

(a) UV-Vis absorption spectra of the ligand-free Ag colloidal solution produced via picosecond laser ablation of a silver target in deionized water using different laser wavelength, sample A: 1064 nm and sample B: 355 nm. (b) XRD pattern of the ligand-free Ag NPs ( nm) produced via picosecond laser ablation of a silver target in deionized water. Ag NPs exhibit the (111), (200), (220), and (311) main peaks of cubic Ag phases.

(a)

(b)