Facile electrochemical synthesis of Pd nanoparticles with enhanced electrocatalytic properties from surfactant-free electrolyte

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dc.contributor.author Hasan, Maksudul
dc.contributor.author Khunsin, Worawut
dc.contributor.author Mavrokefalos, Christos K.
dc.contributor.author Maier, Stefan A.
dc.contributor.author Rohan, James F.
dc.contributor.author Foord, John S.
dc.date.accessioned 2018-01-05T15:33:43Z
dc.date.available 2018-01-05T15:33:43Z
dc.date.issued 2017-12-20
dc.identifier.citation Hasan, M., Khunsin, W., Mavrokefalos, C. K., Maier, S. A., Rohan, J. F. and Foord, J. S. (2017) 'Facile Electrochemical Synthesis of Pd Nanoparticles with Enhanced Electrocatalytic Properties from Surfactant-Free Electrolyte', ChemElectroChem, In Press, doi: 10.1002/celc.201701132 en
dc.identifier.startpage 1 en
dc.identifier.endpage 11 en
dc.identifier.issn 2196-0216
dc.identifier.uri http://hdl.handle.net/10468/5239
dc.identifier.doi 10.1002/celc.201701132
dc.description.abstract Synthesis of low-dimensional metallic nanoparticles with a clean surface, high dispersibility, and enhanced atomic surface distribution is extremely important, as these factors strongly influence the electrocatalytic properties of the nanoparticles. In this study, the early stage electrochemical nucleation and growth of palladium nanoparticles (Pd NPs) under potentiostatic control has been investigated on a Au(111) textured substrate. The size distribution and structural characterization of the ex situ as-deposited Pd NPs by means of high-resolution field emission gun-scanning electron microscopy (FEG-SEM) at different stages combined with electrochemical measurements revealed that the cluster of nuclei grew independently through the reduction of metal ions. The electrodeposited Pd NPs were very pure, as confirmed by X-ray photoelectron spectroscopy (XPS), owing to the surfactant-free green electrodeposition process, and they exhibited a highly dispersed average particle size of 2–5 nm. The average nanoparticle size becomes smaller with higher overpotentials for the same deposition time. The synthesized Pd NPs demonstrated the largest specific surface area (four times that of commercial Pd−C) and electrocatalytic activity in ferrocyanide/ferricyanide redox and ethanol electrooxidation processes (35 times that of commercial Pd−C). This work represents an important step in achieving the fundamental understanding of nucleation and growth of nanoparticles correlating the electrocatalytic performances. en
dc.description.sponsorship Irish Research Council (elevate fellowship programme co-funded by Marie Skłodowska Curie Actions (Grant no. ELEVATEPD/2014/15)); en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Wiley en
dc.rights © 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. This is the peer reviewed version of the following article: Facile Electrochemical Synthesis of Pd Nanoparticles with Enhanced Electrocatalytic Properties from Surfactant-Free Electrolyte, ChemElectroChem, which has been published in final form at http://dx.doi.org/10.1002/celc.201701132. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. en
dc.subject Electrodeposition en
dc.subject Palladium en
dc.subject Nanoparticles en
dc.subject Nucleation en
dc.subject Fuel cells en
dc.title Facile electrochemical synthesis of Pd nanoparticles with enhanced electrocatalytic properties from surfactant-free electrolyte en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Maksudul Hasan, Tyndall Microsystems, University College Cork, Cork, Ireland. +353-21-490-3000 Email: maksudulhasan@tyndall.ie en
dc.internal.availability Full text available en
dc.check.info Access to this article is restricted until 12 months after publication by request of the publisher. en
dc.check.date 2018-12-20
dc.date.updated 2018-01-05T12:56:38Z
dc.description.version Accepted Version en
dc.internal.rssid 420607185
dc.contributor.funder Irish Research Council en
dc.contributor.funder Seventh Framework Programme en
dc.contributor.funder FP7 People: Marie-Curie Actions en
dc.contributor.funder Engineering and Physical Sciences Research Council en
dc.description.status Peer reviewed en
dc.identifier.journaltitle ChemElectroChem en
dc.internal.copyrightchecked No !!CORA!! en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress maksudulhasan@tyndall.ie en
dc.internal.IRISemailaddress james.rohan@tyndall.ie en
dc.relation.project info:eu-repo/grantAgreement/EC/FP7::SP3::PEOPLE/623424/EU/Photonic-plasmonic hybrid for optical switching and biosensing application/PHOTON-PLASMONHYB en

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