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Stabilization of 2D Raft Structures of Au Nanoclusters with up to 60 Atoms by a Carbon Support

Sean Lethbridge Orcid Logo, Theodoros Pavloudis Orcid Logo, James McCormack, Thomas Slater Orcid Logo, Joseph Kioseoglou Orcid Logo, Richard Palmer Orcid Logo

Small Science

Swansea University Author: Richard Palmer Orcid Logo

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DOI (Published version): 10.1002/smsc.202400093

Abstract

Herein, the stabilization of 2D single-atom high gold rafts containing up to ≈60 Au atoms on amorphous carbon, fabricated by sputtering of atoms and imaged by aberration-corrected scanning transmission electron microscopy, is demonstrated. These rafts deviate from the established cluster transition...

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Published in: Small Science
ISSN: 2688-4046 2688-4046
Published: Wiley 2024
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URI: https://cronfa.swan.ac.uk/Record/cronfa66572
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spelling v2 66572 2024-06-03 Stabilization of 2D Raft Structures of Au Nanoclusters with up to 60 Atoms by a Carbon Support 6ae369618efc7424d9774377536ea519 0000-0001-8728-8083 Richard Palmer Richard Palmer true false 2024-06-03 ACEM Herein, the stabilization of 2D single-atom high gold rafts containing up to ≈60 Au atoms on amorphous carbon, fabricated by sputtering of atoms and imaged by aberration-corrected scanning transmission electron microscopy, is demonstrated. These rafts deviate from the established cluster transition from 2D to 3D Au structural motifs in free clusters, which occurs in the region of 10–14 atoms. The experimental findings by performing explicit ab initio calculations of Aun (n = 3–147) clusters on graphene are supported and the role of cluster–surface interactions in the stabilization of the 2D single-atom high Au cluster rafts on graphene is revealed. The transition from equilibrium 2D–3D structures is delayed to n = 19, while metastable 2D single-atom high rafts compete with 3D structures up to about n = 60 atoms. The catalytic activity of supported nanoclusters depends strongly on their structure (and carbon-based supports are used for a number of reactions); therefore these results are relevant to the catalytic performance of nanocluster-based catalysts. Journal Article Small Science 0 Wiley 2688-4046 2688-4046 2D rafts; AC-STEM; DFT calculations; nano-clusters 22 5 2024 2024-05-22 10.1002/smsc.202400093 COLLEGE NANME Aerospace, Civil, Electrical, and Mechanical Engineering COLLEGE CODE ACEM Swansea University SU Library paid the OA fee (TA Institutional Deal) Leverhulme Trust. Grant Number: RPG-2020-226; Engineering and Physical Sciences Research Council. Grant Number: EP/V029797/2; National Infrastructures for Research and Technology. Grant Number: pr015006 2024-06-03T12:16:07.0517682 2024-06-03T12:08:20.0565013 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering Sean Lethbridge 0000-0002-0516-1650 1 Theodoros Pavloudis 0000-0001-9820-8552 2 James McCormack 3 Thomas Slater 0000-0003-0372-1551 4 Joseph Kioseoglou 0000-0002-6933-2674 5 Richard Palmer 0000-0001-8728-8083 6 66572__30521__8a6afeaf3bfd4c698e6cc9d07ef230a1.pdf 66572_VoR.pdf 2024-06-03T12:12:02.2868270 Output 1667911 application/pdf Version of Record true © 2024 The Author(s). This is an open access article under the terms of the Creative Commons Attribution License. true eng http://creativecommons.org/licenses/by/4.0/
title Stabilization of 2D Raft Structures of Au Nanoclusters with up to 60 Atoms by a Carbon Support
spellingShingle Stabilization of 2D Raft Structures of Au Nanoclusters with up to 60 Atoms by a Carbon Support
Richard Palmer
title_short Stabilization of 2D Raft Structures of Au Nanoclusters with up to 60 Atoms by a Carbon Support
title_full Stabilization of 2D Raft Structures of Au Nanoclusters with up to 60 Atoms by a Carbon Support
title_fullStr Stabilization of 2D Raft Structures of Au Nanoclusters with up to 60 Atoms by a Carbon Support
title_full_unstemmed Stabilization of 2D Raft Structures of Au Nanoclusters with up to 60 Atoms by a Carbon Support
title_sort Stabilization of 2D Raft Structures of Au Nanoclusters with up to 60 Atoms by a Carbon Support
author_id_str_mv 6ae369618efc7424d9774377536ea519
author_id_fullname_str_mv 6ae369618efc7424d9774377536ea519_***_Richard Palmer
author Richard Palmer
author2 Sean Lethbridge
Theodoros Pavloudis
James McCormack
Thomas Slater
Joseph Kioseoglou
Richard Palmer
format Journal article
container_title Small Science
container_volume 0
publishDate 2024
institution Swansea University
issn 2688-4046
2688-4046
doi_str_mv 10.1002/smsc.202400093
publisher Wiley
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering
document_store_str 1
active_str 0
description Herein, the stabilization of 2D single-atom high gold rafts containing up to ≈60 Au atoms on amorphous carbon, fabricated by sputtering of atoms and imaged by aberration-corrected scanning transmission electron microscopy, is demonstrated. These rafts deviate from the established cluster transition from 2D to 3D Au structural motifs in free clusters, which occurs in the region of 10–14 atoms. The experimental findings by performing explicit ab initio calculations of Aun (n = 3–147) clusters on graphene are supported and the role of cluster–surface interactions in the stabilization of the 2D single-atom high Au cluster rafts on graphene is revealed. The transition from equilibrium 2D–3D structures is delayed to n = 19, while metastable 2D single-atom high rafts compete with 3D structures up to about n = 60 atoms. The catalytic activity of supported nanoclusters depends strongly on their structure (and carbon-based supports are used for a number of reactions); therefore these results are relevant to the catalytic performance of nanocluster-based catalysts.
published_date 2024-05-22T12:16:06Z
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score 11.013776

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