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Issue 1, 2019
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In situ structural evolution of single particle model catalysts under ambient pressure reaction conditions

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Abstract

The catalytic activity of metal nanoparticles can be altered by applying strain, which changes the crystalline lattice spacing and modifies the electronic properties of the metal. Understanding the role of elastic strain during catalytic reactions is thus crucial for catalyst design. Here, we show how single highly faceted Pt nanoparticles expand or contract upon interaction with different gas atmospheres using in situ nano-focused coherent X-ray diffraction imaging. We also demonstrate inter-particle heterogeneities, as they differ in development of strain under CO oxidation reaction conditions. The reported observations offer new insights into the design of catalysts exploiting strain effects.

Graphical abstract: In situ structural evolution of single particle model catalysts under ambient pressure reaction conditions

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Publication details

The article was received on 17 Oct 2018, accepted on 27 Nov 2018 and first published on 03 Dec 2018


Article type: Paper
DOI: 10.1039/C8NR08414A
Citation: Nanoscale, 2019,11, 331-338

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    In situ structural evolution of single particle model catalysts under ambient pressure reaction conditions

    S. Fernández, L. Gao, J. P. Hofmann, J. Carnis, S. Labat, G. A. Chahine, A. J. F. van Hoof, M. W. G. M. (. Verhoeven, T. U. Schülli, E. J. M. Hensen, O. Thomas and M. Richard, Nanoscale, 2019, 11, 331
    DOI: 10.1039/C8NR08414A

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