Anomalous diffusion of single metal atoms on a graphene oxide support
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Peer-reviewed
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Abstract
Recent studies of single-atom catalysts open up the prospect of designing exceptionally active and environmentally efficient chemical processes. The stability and durability of such catalysts is governed by the strength with which the atoms are bound to their support and their diffusive behaviour. Here we use aberration-corrected STEM to image the diffusion of single copper adatoms on graphene oxide. We discover that individual atoms exhibit ano malous diffusion as a result of spatial and energetic disorder inherent in the support, and interpret the origins of this behaviour to develop a physical picture for the surface diffusion of single metal atoms.
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Keywords
Anomalous diffusion, Single atom catalysts, STEM, Graphene oxide
Journal Title
Chemical Physics Letters
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Journal ISSN
0009-2614
1873-4448
1873-4448
Volume Title
683
Publisher
Elsevier
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Sponsorship
European Research Council (291522)
European Commission (312483)
European Commission (312483)