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Issue 12, 2011
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Nanoalloying in real time. A high resolution STEM and computer simulation study

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Abstract

Bimetallic nanoparticles constitute a promising type of catalysts, mainly because their physical and chemical properties may be tuned by varying their chemical composition, atomic ordering, and size. Today, the design of novel nanocatalysts is possible through a combination of virtual lab simulations on massive parallel computing and modern electron microscopy with picometre resolution on one hand, and the capability of chemical analysis at the atomic scale on the other. In this work we show how the combination of theoretical calculations and characterization can solve some of the paradoxes reported about nanocatalysts: Au–Pd bimetallic nanoparticles. In particular, we demonstrate the key role played by adsorbates, such as carbon monoxide (CO), on the structure of nanoalloys. Our results imply that surface condition of nanoparticles during synthesis is a parameter of paramount importance.

Graphical abstract: Nanoalloying in real time. A high resolution STEM and computer simulation study

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Publication details

The article was received on 09 Aug 2011, accepted on 27 Sep 2011 and first published on 28 Oct 2011


Article type: Paper
DOI: 10.1039/C1NR11052G
Nanoscale, 2011,3, 5013-5019

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    Nanoalloying in real time. A high resolution STEM and computer simulation study

    M. M. Mariscal, A. Mayoral, J. A. Olmos-Asar, C. Magen, S. Mejía-Rosales, E. Pérez-Tijerina and M. José-Yacamán, Nanoscale, 2011, 3, 5013
    DOI: 10.1039/C1NR11052G

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