1.
Chemphyschem
; 19(11): 1414-1419, 2018 06 05.
Artigo
em Inglês
| MEDLINE
| ID: mdl-29543395
RESUMO
Homogeneous polycrystalline Fex Oy nanoparticles were generated by ablation of iron targets in water by nanosecond laser pulses at 532â nm. In ethanol, crystalline core-shell Fe/Fex Oy structures with size medians around 20â nm were produced. The ablation of FeWx Oy targets in water resulted in crystalline hollow shells and homogeneous FeWx Oy nanoparticles. In contrast, amorphous core-shell FeWx Oy nanoparticles with a median size of 17â nm were produced in ethanol. The size distribution of both the Fex Oy and the FeWx Oy particles showed a slight dependence on fluence and pulse number. This may be related to primary and secondary ablation and modification mechanisms.