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Title: Anomalous diffusion of single metal atoms on a graphene oxide support

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. As a result, we discover that individual atoms exhibit anomalous 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.
Authors:
 [1] ;  [1] ;  [2] ;  [2] ;  [3] ;  [1] ;  [1] ;  [1]
  1. Univ. of Cambridge, Cambridge (United Kingdom)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
  3. SuperSTEM Lab., Warrington (United Kingdom)
Publication Date:
Grant/Contract Number:
AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
Chemical Physics Letters
Additional Journal Information:
Journal Volume: 683; Journal Issue: C; Journal ID: ISSN 0009-2614
Publisher:
Elsevier
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22), Materials Sciences and Engineering Division; European Research Council (ERC); European Commission, Community Research and Development Information Service (CORDIS), Seventh Framework Programme (FP7); Engineering and Physical Sciences Research Council (EPSRC)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; anomalous diffusion; STEM; graphene oxide; single atom catalysts
OSTI Identifier:
1376879

Furnival, Tom, Leary, Rowan K., Tyo, Eric C., Vajda, Stefan, Ramasse, Quentin M., Thomas, John Meurig, Bristowe, Paul D., and Midgley, Paul A.. Anomalous diffusion of single metal atoms on a graphene oxide support. United States: N. p., Web. doi:10.1016/j.cplett.2017.04.071.
Furnival, Tom, Leary, Rowan K., Tyo, Eric C., Vajda, Stefan, Ramasse, Quentin M., Thomas, John Meurig, Bristowe, Paul D., & Midgley, Paul A.. Anomalous diffusion of single metal atoms on a graphene oxide support. United States. doi:10.1016/j.cplett.2017.04.071.
Furnival, Tom, Leary, Rowan K., Tyo, Eric C., Vajda, Stefan, Ramasse, Quentin M., Thomas, John Meurig, Bristowe, Paul D., and Midgley, Paul A.. 2017. "Anomalous diffusion of single metal atoms on a graphene oxide support". United States. doi:10.1016/j.cplett.2017.04.071. https://www.osti.gov/servlets/purl/1376879.
@article{osti_1376879,
title = {Anomalous diffusion of single metal atoms on a graphene oxide support},
author = {Furnival, Tom and Leary, Rowan K. and Tyo, Eric C. and Vajda, Stefan and Ramasse, Quentin M. and Thomas, John Meurig and Bristowe, Paul D. and Midgley, Paul A.},
abstractNote = {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. As a result, we discover that individual atoms exhibit anomalous 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.},
doi = {10.1016/j.cplett.2017.04.071},
journal = {Chemical Physics Letters},
number = C,
volume = 683,
place = {United States},
year = {2017},
month = {4}
}