Three-layer core/shell structure in Au-Pd bimetallic nanoparticles.
This paper describes the internal structure of Au-Pd nanoparticles exhibiting newly discovered three-layer core/shell morphology, which is composed of an evenly alloyed inner core, an Au-rich intermediate layer, and a Pd-rich outer shell. By exploitation of spatially resolved imaging and spectroscopic and diffraction modes of transmission electron microscopy (TEM), insights were gained on the composition of each one of the observed three layers, indicating a significant extent of intimate alloy among the monometallic elements.
Ferrer
D
D
Department of Chemical Engineering, The University of Texas at Austin, 1 University Station, MS C0400, Austin, Texas 78712, USA.
Torres-Castro
A
A
Gao
X
X
Sepúlveda-Guzmán
S
S
Ortiz-Méndez
U
U
José-Yacamán
M
M
D000497:Alloys / Q000737:chemistry; D003460:Crystallization / Q000379:methods*; D006046:Gold / Q000737:chemistry*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods*; D010165:Palladium / Q000737:chemistry*; D010316:Particle Size; D013499:Surface Properties
D000497:Alloys; D046911:Macromolecular Substances; D010165:Palladium; D006046:Gold