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Revealing the Distribution of the Atoms within Individual Bimetallic Catalyst Nanoparticles |
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| Authors: | Dr Peter Felfer Dr Paul Benndorf Prof Anthony Masters Prof Thomas Maschmeyer Prof Julie M Cairney |
| Institution: | 1. School for Aerospace, Mechanical and Mechatronic Engineering/Australian Centre for Microscopy and Microanalysis, The University of Sydney, Madsen Building F09, NSW 2006 (Australia);2. Lab. for Advanced Catalysis for Sustainability, School of Chemistry, The University of Sydney, Chemistry Building F11, NSW 2006 (Australia) |
| Abstract: | 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. |
| Keywords: | atom‐probe tomography heterogeneous catalysts nanoparticles silver surface analysis |