Size-Selected Ag Nanoparticles with Five-Fold Symmetry

• DOI: 10.1007/s11671-009-9328-4
• Publication Date: 2009-05-14T04:39:59Z
• Authors: MiguelÁngel Graci...; Domingo Ferrer; Sergio Mejía-Rosales; Eduardo Pérez-Tij...
• Keywords: Nanochemistry; Coalescence (physics); Nanoreactor; Trimer; Inert gas; Dumbbell

Silver nanoparticles were synthesized using the inert gas aggregation technique. We found optimal experimental conditions to synthesize at different sizes: 1.3 ± 0.2, 1.7 0.3, 2.5 0.4, 3.7 4.5 0.9, and 5.5 0.3 nm. able investigate dependence of size on synthesis parameters. Our data suggest that clusters (dimers, trimer, etc.) into active zone nanocluster source is predominant physical mechanism for formation nanoparticles. experiments carried out in kept density low, larges by coalescence processes was avoided. In order preserve structural morphological properties, impact energy landing substrate controlled, such acceleration around 0.1 eV/atom, assuring a soft deposition. High-resolution transmission electron microscopy images showed icosahedral shape, preferentially oriented with five-fold axis perpendicular surface. results show technique very promising alternative produce metal when control both shape are critical development practical applications.