Premium
Revealing the Distribution of the Atoms within Individual Bimetallic Catalyst Nanoparticles
Author(s) -
Felfer Peter,
Benndorf Paul,
Masters Anthony,
Maschmeyer Thomas,
Cairney Julie M.
Publication year - 2014
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201405043
Subject(s) - bimetallic strip , nanoparticle , catalysis , atom (system on chip) , atom probe , nanotechnology , chemical physics , materials science , particle (ecology) , distribution (mathematics) , chemical engineering , chemistry , organic chemistry , mathematical analysis , oceanography , mathematics , transmission electron microscopy , geology , computer science , embedded system , engineering
To be able to correlate the catalytic properties of nanoparticles with their structure, detailed knowledge about their make‐up on the atomic level is required. Herein, we demonstrate how atom‐probe tomography (APT) can be used to quantitatively determine the three‐dimensional distribution of atoms within a Au@Ag nanoparticle with near‐atomic resolution. We reveal that the elements are not evenly distributed across the surface and that this distribution is related to the surface morphology and residues from the particle synthesis.