A single-Pt-atom-on-Ru-nanoparticle electrocatalyst for CO-resilient methanol oxidation

Poerwoprajitno, AR; Gloag, L; Watt, J; Cheong, S; Tan, X; Lei, H; Tahini, HA; Henson, A; Subhash, B; Bedford, NM; Miller, BK; O’Mara, PB; Benedetti, TM; Huber, DL; Zhang, W; Smith, SC; Gooding, JJ; Schuhmann, W; Tilley, RD

A single-Pt-atom-on-Ru-nanoparticle electrocatalyst for CO-resilient methanol oxidation

Poerwoprajitno, AR Gloag, L

Watt, J Cheong, S Tan, X Lei, H Tahini, HA Henson, A Subhash, B Bedford, NM Miller, BK O’Mara, PB Benedetti, TM Huber, DL Zhang, W Smith, SC Gooding, JJ Schuhmann, W Tilley, RD

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Publisher:: Springer Nature
Publication Type:: Journal Article
Citation:: Nature Catalysis, 2022, 5, (3), pp. 231-237
Issue Date:: 2022-03-01

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Field	Value	Language
dc.contributor.author	Poerwoprajitno, AR
dc.contributor.author	Gloag, L https://orcid.org/0000-0001-7548-1521
dc.contributor.author	Watt, J
dc.contributor.author	Cheong, S
dc.contributor.author	Tan, X
dc.contributor.author	Lei, H
dc.contributor.author	Tahini, HA
dc.contributor.author	Henson, A
dc.contributor.author	Subhash, B
dc.contributor.author	Bedford, NM
dc.contributor.author	Miller, BK
dc.contributor.author	O’Mara, PB
dc.contributor.author	Benedetti, TM
dc.contributor.author	Huber, DL
dc.contributor.author	Zhang, W
dc.contributor.author	Smith, SC
dc.contributor.author	Gooding, JJ
dc.contributor.author	Schuhmann, W
dc.contributor.author	Tilley, RD
dc.date.accessioned	2023-06-18T01:58:16Z
dc.date.available	2023-06-18T01:58:16Z
dc.date.issued	2022-03-01
dc.identifier.citation	Nature Catalysis, 2022, 5, (3), pp. 231-237
dc.identifier.issn	2520-1158
dc.identifier.issn	2520-1158
dc.identifier.uri	http://hdl.handle.net/10453/170781
dc.description.abstract	Single Pt atom catalysts are key targets because a high exposure of Pt substantially enhances electrocatalytic activity. In addition, PtRu alloy nanoparticles are the most active catalysts for the methanol oxidation reaction. To combine the exceptional activity of single Pt atom catalysts with an active Ru support we must overcome the synthetic challenge of forming single Pt atoms on noble metal nanoparticles. Here we demonstrate a process that grows and spreads Pt islands on Ru branched nanoparticles to create single-Pt-atom-on-Ru catalysts. By following the spreading process by in situ TEM, we found that the formation of a stable single atom structure is thermodynamically driven by the formation of strong Pt–Ru bonds and the lowering of the surface energy of the Pt islands. The stability of the single-Pt-atom-on-Ru structure and its resilience to CO poisoning result in a high current density and mass activity for the methanol oxidation reaction over time. [Figure not available: see fulltext.]
dc.language	en
dc.publisher	Springer Nature
dc.relation	http://purl.org/au-research/grants/arc/LE200100033
dc.relation.ispartof	Nature Catalysis
dc.relation.isbasedon	10.1038/s41929-022-00756-9
dc.rights	info:eu-repo/semantics/closedAccess
dc.title	A single-Pt-atom-on-Ru-nanoparticle electrocatalyst for CO-resilient methanol oxidation
dc.type	Journal Article
utslib.citation.volume	5
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
utslib.copyright.status	closed_access	*
dc.date.updated	2023-06-18T01:58:15Z
pubs.issue	3
pubs.publication-status	Published
pubs.volume	5
utslib.citation.issue	3

Abstract:

Single Pt atom catalysts are key targets because a high exposure of Pt substantially enhances electrocatalytic activity. In addition, PtRu alloy nanoparticles are the most active catalysts for the methanol oxidation reaction. To combine the exceptional activity of single Pt atom catalysts with an active Ru support we must overcome the synthetic challenge of forming single Pt atoms on noble metal nanoparticles. Here we demonstrate a process that grows and spreads Pt islands on Ru branched nanoparticles to create single-Pt-atom-on-Ru catalysts. By following the spreading process by in situ TEM, we found that the formation of a stable single atom structure is thermodynamically driven by the formation of strong Pt–Ru bonds and the lowering of the surface energy of the Pt islands. The stability of the single-Pt-atom-on-Ru structure and its resilience to CO poisoning result in a high current density and mass activity for the methanol oxidation reaction over time. [Figure not available: see fulltext.]

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http://hdl.handle.net/10453/170781