TY - GEN
T1 - Characterization of Pt-Pd bimetallic nanoparticles by Cs-corrected STEM
AU - Téllez-Vázquez, O.
AU - Esparza, R.
AU - Rodríguez-Ortiz, G.
AU - García-Ruiz, Amado F.
AU - Pérez, R.
AU - José-Yacamán, M.
N1 - Funding Information:
This study was supported in part by Grant P-003-P31B-02/97 from PRAXIS XXI. M.J.B. is recipient of a fellowship from Fundac¸ão para a Ciência e a Tecnologia.
PY - 2013
Y1 - 2013
N2 - Pt-Pd bimetallic nanoparticles were characterized using aberration (Cs) corrected scanning transmission electron microscopy (STEM) along with molecular dynamics simulations. The nanoparticles were synthesized through a microwave-assisted process. This technique has been applied to synthesize metallic nanoparticles at relatively short times, allowing a good control of size distribution. The structure of the bimetallic nanoparticles is fcc-like with an average size of 5 nm. To understand the properties of the bimetallic nanoparticles, it is necessary to know the positions of all the atoms in the nanostructure. We have used a recent quantitative method to analyze HAADF STEM images which allowed us to measure the total intensity of the scattered electrons for each atomic column. Beside with the characterization of the nanoparticles, we have performed classical molecular dynamics simulation for the structural and dynamical analysis of the cuboctahedral Pt-Pd bimetallic nanoparticles.
AB - Pt-Pd bimetallic nanoparticles were characterized using aberration (Cs) corrected scanning transmission electron microscopy (STEM) along with molecular dynamics simulations. The nanoparticles were synthesized through a microwave-assisted process. This technique has been applied to synthesize metallic nanoparticles at relatively short times, allowing a good control of size distribution. The structure of the bimetallic nanoparticles is fcc-like with an average size of 5 nm. To understand the properties of the bimetallic nanoparticles, it is necessary to know the positions of all the atoms in the nanostructure. We have used a recent quantitative method to analyze HAADF STEM images which allowed us to measure the total intensity of the scattered electrons for each atomic column. Beside with the characterization of the nanoparticles, we have performed classical molecular dynamics simulation for the structural and dynamical analysis of the cuboctahedral Pt-Pd bimetallic nanoparticles.
KW - Aberration corrected
KW - Electron microscopy
KW - Microwave-assisted process
KW - Molecular dynamics
KW - Nanostructure
KW - Pt-Pd
UR - http://www.scopus.com/inward/record.url?scp=84878238294&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/MSF.755.69
DO - 10.4028/www.scientific.net/MSF.755.69
M3 - Contribución a la conferencia
SN - 9783037856574
T3 - Materials Science Forum
SP - 69
EP - 74
BT - Structural and Chemical Characterization of Metals, Alloys and Compounds
PB - Trans Tech Publications Ltd
T2 - 21st International Materials Research Congress, IMRC 2012
Y2 - 12 August 2012 through 17 August 2012
ER -