Monophasic ligand-free alloy nanoparticle synthesis determinants during pulsed laser ablation of bulk alloy and consolidated microparticles in water.

摘要: Chemical syntheses of homogenous solid solution alloy nanoparticles noble metals require high temperature above 100 °C. Beside this, aqueous co-reduction methods lead to phase separation. In contrast, pulsed laser ablation in liquid (PLAL) allows synthesis with totally homogeneous ultrastructure media at room without reducing agents or organic ligands. However, date, the dominant formation process during PLAL is not fully understood. Based on model Ag–Au alloy, we elucidate that underlying mechanism affected by post-irradiation interactions colloidal particles but caused directly ablation. this context analyzed generated from targets 9 different compositions as well pure Ag and Au references using UV-Vis spectroscopy, TEM TEM-EDX line scans. The obtained results highlight total composition microstructure applied target parameter ruling elemental resulting nanoparticles. these findings, application pressed metal powder mixtures a continuous residence time <60 s economical fabrication ideally suited for applications catalysis biomedicine.