A simple and “green” technique to synthesize long-term stability colloidal Ag nanoparticles: Fs laser ablation in a biocompatible aqueous medium

MUÑETÓN ARBOLEDA, DAVID; SANTILLÁN, JESICA M. J.; ARCE, VALERIA B.; FERNÁNDEZ VAN RAAP, MARCELA B.; MURACA, DIEGO; FERNÁNDEZ, MARIELA A.; TORRES SANCHEZ, ROSA M.; SCHINCA, DANIEL C.; SCAFFARDI, LUCÍA B.

MATERIALS CHARACTERIZATION

ELSEVIER SCIENCE INC

Lugar: Amsterdam; Año: 2018 vol. 140 p. 320 - 332

1044-5803

A comparative study of spectral characteristics, size distribution, composition, morphology and long-term stability of colloidal Ag NPs synthesized by ultrashort pulse laser ablation of a solid target and by chemical salt reduction, both in Trisodium Citrate (TSC) aqueous solution was carried out. Several techniques were independently used to characterize optical, structural and compositional properties of the colloidal samples. Both synthesis routes yield bare core Ag and Ag@ Ag 2 O core@ shell NPs, with size distributions of roughly similar size centered at about 1.2 nm radius. Stability analysis of samples was conducted for several weeks and after one-year of fabrication, analyzing the characteristics of the plasmon resonance in the optical extinction spectra and independently by zeta potential measurements.