A Simple and "Green" Technique to Synthesize Metal Nanocolloids by Ultrashort Light Pulses

SANTILLÁN, JESICA MARÍA JOSÉ; MUÑETÓN ARBOLEDA, DAVID; ARCE, VALERIA B.; SCAFFARDI, LUCÍA B.; SCHINCA, DANIEL C.

Colloids - Types, Preparation and Applications

IntechOpen Limited

Año: 2021; p. 1 - 232

In this chapter Ag, Ni and Fe nanocolloids synthesized by "green" ultrashortpulse laser ablation of solid metal targets using different pulse energies and liquidmedia are characterized by different techniques. Optical extinction spectroscopy (OES), micro-Raman spectroscopy (MRS), transmission electron microscopy (TEM) and electron diffraction (ED) were independently used to analyze optical,morphological and compositional properties of the generated nanocolloids. In adeeper way, the stability characteristics of Ag nanocolloids in aqueous solutionswith different stabilizers were studied owing to their potential use in biocompatiblecompounds. Besides, due to their interesting applications, few atoms Agnanoclusters (NCs) were synthesized using the same ablation technique, analyzingtheir fluorescent and photocatalytic properties. On the other hand, to expand thecharacterization of the nanocolloids, their magnetic behavior was inspected for theNi and Fe by vibrating sample magnetometry (VSM).