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

Sara Fernández, Lu Gao, Jan Philipp Hofmann, Jérôme Carnis, Stéphane Labat, Gilbert A. Chahine, Arno J.F. Van Hoof, M. W.G.M. Verhoeven, Tobias U. Schülli, Emiel J.M. Hensen, Olivier Thomas, Marie Ingrid Richard

Research output: Contribution to journalArticleAcademicpeer-review

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.

LanguageEnglish
Pages331-338
Number of pages8
JournalNanoscale
Volume11
Issue number1
DOIs
StatePublished - 7 Jan 2019

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Catalysts
Metal nanoparticles
Carbon Monoxide
Crystal lattices
Electronic properties
Catalyst activity
Gases
Metals
Nanoparticles
Crystalline materials
Imaging techniques
X ray diffraction
Oxidation

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Fernández, S., Gao, L., Hofmann, J. P., Carnis, J., Labat, S., Chahine, G. A., ... Richard, M. I. (2019). In situ structural evolution of single particle model catalysts under ambient pressure reaction conditions. Nanoscale, 11(1), 331-338. DOI: 10.1039/C8NR08414A
Fernández, Sara ; Gao, Lu ; Hofmann, Jan Philipp ; Carnis, Jérôme ; Labat, Stéphane ; Chahine, Gilbert A. ; Van Hoof, Arno J.F. ; Verhoeven, M. W.G.M. ; Schülli, Tobias U. ; Hensen, Emiel J.M. ; Thomas, Olivier ; Richard, Marie Ingrid. / In situ structural evolution of single particle model catalysts under ambient pressure reaction conditions. In: Nanoscale. 2019 ; Vol. 11, No. 1. pp. 331-338
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In situ structural evolution of single particle model catalysts under ambient pressure reaction conditions. / Fernández, Sara; Gao, Lu; Hofmann, Jan Philipp; Carnis, Jérôme; Labat, Stéphane; Chahine, Gilbert A.; Van Hoof, Arno J.F.; Verhoeven, M. W.G.M.; Schülli, Tobias U.; Hensen, Emiel J.M.; Thomas, Olivier; Richard, Marie Ingrid.

In: Nanoscale, Vol. 11, No. 1, 07.01.2019, p. 331-338.

Research output: Contribution to journalArticleAcademicpeer-review

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AU - Gao,Lu

AU - Hofmann,Jan Philipp

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AU - Chahine,Gilbert A.

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Fernández S, Gao L, Hofmann JP, Carnis J, Labat S, Chahine GA et al. In situ structural evolution of single particle model catalysts under ambient pressure reaction conditions. Nanoscale. 2019 Jan 7;11(1):331-338. Available from, DOI: 10.1039/C8NR08414A