Electrocatalytic and SERS activity of Pt rich Pt-Pb nanostructures formed via the utilisation of in-situ underpotential deposition of lead

Plowman, Blake J., Abdelhamid, Muhammad E., Ippolito, Samuel J., Bansal, Vipul, Bhargava, Suresh K., & O'Mullane, Anthony P. (2014) Electrocatalytic and SERS activity of Pt rich Pt-Pb nanostructures formed via the utilisation of in-situ underpotential deposition of lead. Journal of Solid State Electrochemistry, 18(12), pp. 3345-3357.

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Abstract

The controlled synthesis of nanostructured materials remains an ongoing area of research, especially as the size, shape and composition of nanomaterials can greatly influence their properties and applications. In this work we present the electrodeposition of highly dendritic platinum rich platinum-lead nanostructures, where lead acetate acts as an inorganic shape directing agent via underpotential deposition on the growing electrodeposit. It was found that these nanomaterials readily oxidise at potentials below monolayer oxide formation, which significantly impacts on the methanol electrooxidation reaction and correlates with the incipient hydrous oxide adatom mediator (IHOAM) model of electrocatalysis. Additionally these materials were tested for their surface enhanced Raman scattering (SERS) activity, where the high density of sharp tips provides promise for their application as SERS substrates.

Impact and interest:

6 citations in Scopus
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6 citations in Web of Science®

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21 since deposited on 17 Dec 2014
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ID Code: 79520
Item Type: Journal Article
Refereed: Yes
Keywords: Electrochemistry, Electrocatalysis, Electrodeposition, Nanostructures, Pt-Pb nanocatalysts
DOI: 10.1007/s10008-014-2622-9
ISSN: 1433-0768
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Colloid and Surface Chemistry (030603)
Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Electrochemistry (030604)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Funding:
Copyright Owner: Copyright 2014 Springer-Verlag Berlin Heidelberg
Copyright Statement: The final publication is available at Springer via http://dx.doi.org/10.1007/s10008-014-2622-9
Deposited On: 17 Dec 2014 04:53
Last Modified: 04 Jan 2016 11:44

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