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Controlling Platinum Active Sites on Silver Nanoparticles for Hydrogen Evolution Reaction

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dc.contributor.authorMariandry, Kevinen
dc.contributor.authorKokate, Ravindraen
dc.contributor.authorSomerville, Samuel V.en
dc.contributor.authorGloag, Lucyen
dc.contributor.authorCheong, Soshanen
dc.contributor.authorCarroll, Liam R.en
dc.contributor.authorKumar, Priyank V.en
dc.contributor.authorGooding, J. Justinen
dc.contributor.authorTilley, Richard D.en
dc.date.accessioned2025-05-30T18:28:36Z
dc.date.available2025-05-30T18:28:36Z
dc.date.issued2023en
dc.description.abstractGrowing Pt on Ag nanoparticles is a promising approach to forming catalysts that present active sites with both Pt and Ag available to improve the activity for the hydrogen evolution reaction (HER). By carefully controlling the concentration of a Pt precursor, the amount of Pt-decorated particles onto the Ag nanoparticles could be controlled to grow Pt islands between 0.6 and 1.5 nm. As a result, the relative amounts of the Ag-Pt active sites could be tuned. The smallest, 0.6 nm Pt islands on the Ag nanoparticle, with the highest ratio of Ag-Pt to Pt-Pt sites was found to have the highest activity and an accelerated Volmer step. DFT modeling showed that the improved performance was due to increased electron density on Pt from electron donation from neighboring Ag that leads to weaker Pt-H binding and the presence of more oxophilic Ag that can bind -OH on the active site that accelerates the water splitting.en
dc.description.sponsorshipWe acknowledge support from Microscopy Australia and the Mark Wainwright Analytical Centre and Electron Microscope Unit at the University of New South Wales. We acknowledge the Solid State and Elemental Analysis Unit (SSEAU) within the Mark Wainwright Analytical Centre (MWAC) at UNSW Sydney for access to XPS facilities. S.V.S. acknowledges support from the Australian Government Research Training Program (RTP) scholarship. This work was supported by the Australian Research Council Discovery Project DP190102659, DP200100143, and DP230100596 (to R.D.T.); Australian Research Council Discovery Project DP210102698 (to J.J.G.); and Australian Research Council LIEF grant LE200100033 (to R.D.T.). This work was supported by the Australian Research Council Discovery Project DP190102659, DP200100143, and DP230100596 (to R.D.T.); Australian Research Council Discovery Project DP210102698 (to J.J.G.); and Australian Research Council LIEF grant LE200100033 (to R.D.T.). We acknowledge support from Microscopy Australia and the Mark Wainwright Analytical Centre and Electron Microscope Unit at the University of New South Wales. We acknowledge the Solid State and Elemental Analysis Unit (SSEAU) within the Mark Wainwright Analytical Centre (MWAC) at UNSW Sydney for access to XPS facilities. S.V.S. acknowledges support from the Australian Government Research Training Program (RTP) scholarship.en
dc.description.statusPeer-revieweden
dc.format.extent9en
dc.identifier.issn0897-4756en
dc.identifier.otherWOS:001140770000001en
dc.identifier.otherORCID:/0000-0001-7548-1521/work/172016334en
dc.identifier.scopus85177064510en
dc.identifier.urihttps://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=anu_research_portal_plus2&SrcAuth=WosAPI&KeyUT=WOS:001140770000001&DestLinkType=FullRecord&DestApp=WOS_CPLen
dc.identifier.urihttps://hdl.handle.net/1885/733755260
dc.language.isoenen
dc.rightsPublisher Copyright: © 2023 American Chemical Society.en
dc.sourceChemistry of Materialsen
dc.subjectEnhanced electrocatalytic activityen
dc.subjectOne-pot synthesisen
dc.subjectTransition-metalsen
dc.subjectHigh-performanceen
dc.subjectNanocrystalsen
dc.subjectCatalystsen
dc.subjectShrinkingen
dc.subjectGrowthen
dc.subjectAciden
dc.titleControlling Platinum Active Sites on Silver Nanoparticles for Hydrogen Evolution Reactionen
dc.typeJournal articleen
dspace.entity.typePublicationen
local.bibliographicCitation.lastpage8644en
local.bibliographicCitation.startpage8636en
local.contributor.affiliationMariandry, Kevin; University of New South Walesen
local.contributor.affiliationKokate, Ravindra; University of New South Walesen
local.contributor.affiliationSomerville, Samuel V.; University of New South Walesen
local.contributor.affiliationGloag, Lucy; University of New South Walesen
local.contributor.affiliationCheong, Soshan; University of New South Walesen
local.contributor.affiliationCarroll, Liam R.; University of New South Walesen
local.contributor.affiliationKumar, Priyank V.; University of New South Walesen
local.contributor.affiliationGooding, J. Justin; University of New South Walesen
local.contributor.affiliationTilley, Richard D.; University of New South Walesen
local.identifier.citationvolume35en
local.identifier.doi10.1021/acs.chemmater.3c01765en
local.identifier.pured9d1fa3f-ae2e-4074-ae34-e28852f3f1c5en
local.identifier.urlhttps://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=anu_research_portal_plus2&SrcAuth=WosAPI&KeyUT=WOS:001140770000001&DestLinkType=FullRecord&DestApp=WOS_CPLen
local.type.statusPublisheden

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