Non defect-stabilized thermally stable single-atom catalyst

Lang, R, Xi, W, Liu, J and Lee, A., et al, 2019, 'Non defect-stabilized thermally stable single-atom catalyst', Nature Communications, vol. 10, no. 1, pp. 1-10.


Document type: Journal Article
Collection: Journal Articles

Title Non defect-stabilized thermally stable single-atom catalyst
Author(s) Lang, R
Xi, W
Liu, J
Lee, A., et al,
Year 2019
Journal name Nature Communications
Volume number 10
Issue number 1
Start page 1
End page 10
Total pages 10
Publisher Nature Publishing Group
Abstract Surface-supported isolated atoms in single-atom catalysts (SACs) are usually stabilized by diverse defects. The fabrication of high-metal-loading and thermally stable SACs remains a formidable challenge due to the difficulty of creating high densities of underpinning stable defects. Here we report that isolated Pt atoms can be stabilized through a strong covalent metal-support interaction (CMSI) that is not associated with support defects, yielding a high-loading and thermally stable SAC by trapping either the already deposited Pt atoms or the PtO 2 units vaporized from nanoparticles during high-temperature calcination. Experimental and computational modeling studies reveal that iron oxide reducibility is crucial to anchor isolated Pt atoms. The resulting high concentrations of single atoms enable specific activities far exceeding those of conventional nanoparticle catalysts. This non defect-stabilization strategy can be extended to non-reducible supports by simply doping with iron oxide, thus paving a new way for constructing high-loading SACs for diverse industrially important catalytic reactions.
Subject Catalysis and Mechanisms of Reactions
DOI - identifier 10.1038/s41467-018-08136-3
Copyright notice © 2019, The Author(s).
ISSN 2041-1723
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Created: Tue, 26 Mar 2019, 09:36:00 EST by Catalyst Administrator
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