Atomic-scale compositional distribution in PtRu nanocatalysts

Chang, S.L.Y., Dwyer, C., Barnard, A.S., and Hocking, R. (2012) Atomic-scale compositional distribution in PtRu nanocatalysts. In: Proceedings of the 10th Asia-Pacific Microscopy Conference (APMC 10), the 2012 International Conference on Nanoscience and Nanotechnology (ICONN 2012) and the 22nd Australian Conference on Microscopy and Microanalysis (ACMM 22) . pp. 1-2. From: APMC 10 / ICONN 2012 / ACMM 22: 10th Asia-Pacific Microscopy Conference, 2012 International Conference on Nanoscience and Nanotechnology, and the 22nd Australian Conference on Microscopy and Microanalysis, 5-9 February 2012, Perth, WA, Australia.

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Abstract

Bimetallic nanoparticles hold great promise in achieving controlled and well-defined electronic and catalytic properties highly valued in a wide variety of commercial applications. These properties are attained through a controlled interplay between particle size, atomic ordering and composition [1]. However, characterisation of the atomic structure and composition of particles smaller than 5 nm has proved extremely challenging using conventional characterisation techniques, often prohibiting the establishment of unambiguous structure-property relations. Here we use aberration-corrected high-angle annular dark-field (HAADF) scanning transmission electron microscopy (STEM), electron scattering simulations and density functional theory (DFT) to probe the compositional distribution in bimetallic nanoparticles at the atomic scale. The combined theoretical and experimental characterisation allows us to establish a fundamental understanding of structure-properties relations in bimetallic nanoparticle systems.

Item ID: 34901
Item Type: Conference Item (Abstract / Summary)
Date Deposited: 03 Sep 2014 03:12
FoR Codes: 03 CHEMICAL SCIENCES > 0302 Inorganic Chemistry > 030207 Transition Metal Chemistry @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970103 Expanding Knowledge in the Chemical Sciences @ 100%
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