RT Journal Article
T1 Au@Ag nanoparticles: halides stabilize {100} facets
A1 Gómez Graña, Sergio
A1 Goris, Bart
A1 Altantzis, Thomas
A1 Fernández López, Cristina
A1 Carbó Argibay, Enrique
A1 Guerrero Martínez, Andrés
A1 Almora Barrios, Neyvis
A1 López, Nuria
A1 Pastoriza Santos, Isabel
A1 Pérez Juste, Jorge
A1 Bals, Sara
A1 Van Tendeloo, Gustaaf
A1 Liz Marzán, Luis Manuel
K1 2307 Química Física
AB Seed-mediated growth is the most efficient methodology to control the size and shape of colloidal metal nanoparticles. In this process, the final nanocrystal shape is defined by the crystalline structure of the initial seed as well as by the presence of ligands and other additives that help to stabilize certain crystallographic facets. We analyze here the growth mechanism in aqueous solution of silver shells on presynthesized gold nanoparticles displaying various well-defined crystalline structures and morphologies. A thorough three-dimensional electron microscopy characterization of the morphology and internal structure of the resulting core–shell nanocrystals indicates that  facets are preferred for the outer silver shell, regardless of the morphology and crystallinity of the gold cores. These results are in agreement with theoretical analysis based on the relative surface energies of the exposed facets in the presence of halide ions.
PB The Journal of Physical Chemistry Letters
SN 19487185
YR 2013
FD 2013-06-24
LK http://hdl.handle.net/11093/6070
UL http://hdl.handle.net/11093/6070
LA eng
NO The Journal of Physical Chemistry Letters, 4(13): 2209-2216 (2013)
DS Investigo
RD 11-sep-2024