Anomalous diffusion of single metal atoms on a graphene oxide support

Autor:	Furnival, T, Leary, RK, Tyo, EC, Vajda, S, Ramasse, QM, Thomas, JM, Bristowe, PD, Midgley, PA
Přispěvatelé:	Bristowe, Paul [0000-0002-3153-1387], Midgley, Paul [0000-0002-6817-458X], Apollo - University of Cambridge Repository
Jazyk:	angličtina
Rok vydání:	2017
Předmět:	inorganic chemicals Condensed Matter::Materials Science Physics::Atomic and Molecular Clusters Anomalous diffusion Single atom catalysts Physics::Chemical Physics STEM Graphene oxide
ISSN:	0009-2614
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dd610db5e41fd846449f09e568f9c6bb https://www.repository.cam.ac.uk/handle/1810/266148 Zobrazit plný text záznamu Full Text from ScienceDirect