Atom probe tomography of au-cu bimetallic ...
Document type :
Article dans une revue scientifique: Article original
DOI :
Permalink :
Title :
Atom probe tomography of au-cu bimetallic nanoparticles synthesized by inert gas condensation
Author(s) :
Yang, Q. [Auteur]
Danaie, M. [Auteur]
Young, N. [Auteur]
Broadley, V. [Auteur]
Joyce, D. E. [Auteur]
Martin, T. L. [Auteur]
Marceau, Eric [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Moody, M. P. [Auteur]
Bagot, Paul A. J. [Auteur]
Danaie, M. [Auteur]
Young, N. [Auteur]
Broadley, V. [Auteur]
Joyce, D. E. [Auteur]
Martin, T. L. [Auteur]
Marceau, Eric [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Moody, M. P. [Auteur]
Bagot, Paul A. J. [Auteur]
Journal title :
Journal of Physical Chemistry C
Abbreviated title :
J. Phys. Chem. C
Volume number :
123
Pages :
26481-26489
Publication date :
2019-10-31
ISSN :
1932-7447
HAL domain(s) :
Chimie/Catalyse
English abstract : [en]
The inert gas condensation method (IGC) produces multimetallic nanoparticles in a metastable state that may exhibit heterogeneities of size, structure, and composition. The deposition of IGC-fabricated nanoparticles on ...
Show more >The inert gas condensation method (IGC) produces multimetallic nanoparticles in a metastable state that may exhibit heterogeneities of size, structure, and composition. The deposition of IGC-fabricated nanoparticles on substrates allows for a detailed characterization by combination of aberration-corrected scanning transmission electron microscopy (TEM) and atom probe tomography (APT). Multiple particle monitoring and high-resolution scanning TEM give access to the size distribution of Au–Cu nanoparticles (<10 nm in diameter, bimodal distribution). TEM and APT show that the alloying between Cu and Au may stabilize the Ih structure for smaller particles (<4 nm). Combining high-resolution scanning transmission electron microscopy/energy dispersive X-ray and three-dimensional composition analysis by APT reveals that an excess of Cu may be present in a shell around the larger particles (>7 nm), while Cu is more randomly distributed in smaller particles.Show less >
Show more >The inert gas condensation method (IGC) produces multimetallic nanoparticles in a metastable state that may exhibit heterogeneities of size, structure, and composition. The deposition of IGC-fabricated nanoparticles on substrates allows for a detailed characterization by combination of aberration-corrected scanning transmission electron microscopy (TEM) and atom probe tomography (APT). Multiple particle monitoring and high-resolution scanning TEM give access to the size distribution of Au–Cu nanoparticles (<10 nm in diameter, bimodal distribution). TEM and APT show that the alloying between Cu and Au may stabilize the Ih structure for smaller particles (<4 nm). Combining high-resolution scanning transmission electron microscopy/energy dispersive X-ray and three-dimensional composition analysis by APT reveals that an excess of Cu may be present in a shell around the larger particles (>7 nm), while Cu is more randomly distributed in smaller particles.Show less >
Language :
Anglais
Audience :
Internationale
Popular science :
Non
Administrative institution(s) :
CNRS
Centrale Lille
ENSCL
Univ. Artois
Université de Lille
Centrale Lille
ENSCL
Univ. Artois
Université de Lille
Collections :
Research team(s) :
Matériaux pour la catalyse (MATCAT)
Submission date :
2022-03-02T07:13:22Z
2024-01-15T16:37:19Z
2024-01-15T16:37:19Z