TY - JOUR
T1 - Atomic surface segregation and structural characterization of PdPt bimetallic nanoparticles
AU - Rodríguez-Proenza, Carlos A.
AU - Palomares-Báez, Juan P.
AU - Chávez-Rojo, Marco A.
AU - García-Ruiz, Amado F.
AU - Azanza-Ricardo, Cristy L.
AU - Santoveña-Uribe, Alan
AU - Luna-Bárcenas, Gabriel
AU - Rodríguez-López, José L.
AU - Esparza, Rodrigo
N1 - Publisher Copyright:
© 2018 by the authors.
PY - 2018/10/2
Y1 - 2018/10/2
N2 - Bimetallic nanoparticles are of interest since they lead to many interesting electrical, chemical, catalytic, and optical properties. They are particularly important in the field of catalysis since they show superior catalytic properties than their monometallic counterparts. The structures of bimetallic nanoparticles depend mainly on the synthesis conditions and the miscibility of the two components. In this work, PdPt alloyed-bimetallic nanoparticles (NPs) were synthesized through the polyol method, and characterized using spherical aberration (Cs) corrected scanning transmission electron microscopy (STEM). High-angle annular dark-field (HAADF)-STEM images of bimetallic nanoparticles were obtained. The contrast of images shows that nanoparticles have an alloy structure with an average size of 8.2 nm. Together with the characterization of nanoparticles, a systematic molecular dynamics simulations study focused on the structural stability and atomic surface segregation trends in 923-atom PdPt alloyed-bimetallic NPs was carried out.
AB - Bimetallic nanoparticles are of interest since they lead to many interesting electrical, chemical, catalytic, and optical properties. They are particularly important in the field of catalysis since they show superior catalytic properties than their monometallic counterparts. The structures of bimetallic nanoparticles depend mainly on the synthesis conditions and the miscibility of the two components. In this work, PdPt alloyed-bimetallic nanoparticles (NPs) were synthesized through the polyol method, and characterized using spherical aberration (Cs) corrected scanning transmission electron microscopy (STEM). High-angle annular dark-field (HAADF)-STEM images of bimetallic nanoparticles were obtained. The contrast of images shows that nanoparticles have an alloy structure with an average size of 8.2 nm. Together with the characterization of nanoparticles, a systematic molecular dynamics simulations study focused on the structural stability and atomic surface segregation trends in 923-atom PdPt alloyed-bimetallic NPs was carried out.
KW - Bimetallic nanoparticles
KW - Electron microscopy
KW - Molecular dynamics simulation
KW - Nanostructures
KW - PdPt alloys
UR - http://www.scopus.com/inward/record.url?scp=85054206307&partnerID=8YFLogxK
U2 - 10.3390/ma11101882
DO - 10.3390/ma11101882
M3 - Artículo
C2 - 30279340
SN - 1996-1944
VL - 11
JO - Materials
JF - Materials
IS - 10
M1 - 1882
ER -