Electrochemical fabrication and characterisation of nanoporous copper from CuZn alloy precursors at macro and microscale electrode arrays

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dc.check.date2027-12-01en
dc.contributor.authorDixon, Ehrenen
dc.contributor.authorCurtis, Neil S.en
dc.contributor.authorNagle, Lorraine C.en
dc.contributor.authorRohan, James F.en
dc.contributor.funderResearch Irelanden
dc.contributor.funderDepartment of Agriculture, Food and the Marine, Irelanden
dc.contributor.funderZoetisen
dc.date.accessioned2025-11-03T14:48:35Z
dc.date.available2025-11-03T14:48:35Z
dc.date.issued2025-12-01en
dc.description.abstractNanoporous copper (NPC) materials possess high surface area, enhanced electrochemical performance, and tunable porosity, making them ideal for sensing and catalytic applications. In this study, NPC was fabricated and characterised from CuZn alloy precursors deposited at both macro and micro-scale electrodes. CuZn alloys were electrodeposited using citrate-complexed sulphate baths, with two distinct modifications to the base bath: saccharin was added for macro-scale deposition to improve adhesion, while pH adjustment was used at the micro-scale to optimise alloy composition and etching behaviour. Physical characterisation using SEM, AFM, EDX, XRD, and TEM confirmed the formation of nanoporous architectures with consistent crystallographic features across scales. Electrochemical characterisation demonstrated significant increases in electrochemical and real surface areas, with NPC exhibiting significant surface area enhancements, corresponding to a surface-area-to-volume ratio of 2.3 × 106 cm-1 at the macro-scale and 4.9 × 105 cm-1 at the micro-scale, a 289-fold and 47-fold increase over their respective geometric surface areas (GSA). These findings highlight the need for scale-specific bath optimisation to enable reliable NPC formation on microelectrodes, supporting their integration into high-performance electrochemical sensing microdisc array (MDA) platforms.en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid147487en
dc.identifier.citationDixon, E.M., Curtis, N.S., Nagle, L.C. and Rohan, J.F. (2025) 'Electrochemical fabrication and characterisation of nanoporous copper from CuZn alloy precursors at macro and microscale electrode arrays', Electrochimica Acta, 542, 147487 (13pp). https://doi.org/10.1016/j.electacta.2025.147487en
dc.identifier.doi10.1016/j.electacta.2025.147487en
dc.identifier.endpage13en
dc.identifier.issn0013-4686en
dc.identifier.journaltitleElectrochimica Actaen
dc.identifier.startpage1en
dc.identifier.urihttps://hdl.handle.net/10468/18141
dc.identifier.volume542en
dc.language.isoenen
dc.publisherElsevieren
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/Research Centres Programme::Phase 2/21/RC/10303_P2/IE/VistaMilk Phase II/en
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/Research Centres Programme::Phase 2/13/RC/2077_P2/IE/CONNECT_Phase 2/en
dc.rights© 2025, Elsevier Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies.en
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectNanoporous metal fabricationen
dc.subjectCopper electrodeen
dc.subjectMicrodiscen
dc.subjectElectrodeen
dc.subjectElectrochemical analysisen
dc.titleElectrochemical fabrication and characterisation of nanoporous copper from CuZn alloy precursors at macro and microscale electrode arraysen
dc.typeArticle (peer-reviewed)en
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