Laser ablation synthesis in solution and nanoalloys: a fruitful combination

GUADAGNINI, ANDREA; D. C. SCHINCA; TORRESAN, VERONICA; AMENDOLA, VINCENZO; MUÑETÓN ARBOLEDA, DAVID

Paestum

Congreso; Nano-M&D 2019 Fabrication, Properties and Applications of Nano-Materials and Nano-Devices; 2019

Laser ablation of solid targets in liquid environment allows the production of nanoparticles (NPs) with peculiar surface chemistry and a large variety of compositions, included metastable phases and nanocomposites, all by the same self standing and simple set up. Currently, several efforts are undergoing to improve the control on laser generated nanomaterials and to precisely understand the formation mechanism of nanoparticles. In this context, nanoalloys of noble metals and transition metals are a useful case-study, because of the different chemical transformations observed in different chemical elements subjected to the same laser ablation process. On the other hand, these noble metal nanoalloys consist of metastable phases hardly achievable by other synthetic approaches, and have multiple functions which are exploitable for plasmonics, surface enhanced Raman scattering (SERS), catalysis and nanomedicine.