Booth, SG, Chang, S-Y, Uehara, A et al. (4 more authors) (2017) In situ XAFS Study of Palladium Electrodeposition at the Liquid/Liquid Interface. Electrochimica Acta, 235. pp. 251-261. ISSN 0013-4686
Abstract
We report the use of XAFS (X-ray absorption fine structure) as an in situ method to follow the electrochemically driven deposition of palladium nanoparticles at a liquid/liquid interface. A novel glass/plastic hybrid electrochemical cell was used to enable control of the potential applied to the liquid/liquid interface. In situ measurements indicate that the nucleation of metallic nanoparticles can be triggered through chronoamperometry or cyclic voltammetry. In contrast to spontaneous nucleation at the liquid/liquid interface, whereby fluctuations in Pd oxidation state and concentration are observed, under a fixed interfacial potential the growth process occurs at a steady rate leading to a build-up of palladium at the interface. Raman spectroscopy of the deposit suggests that the organic electrolyte binds directly to the surface of the deposited nanoparticles. It was found that the introduction of citric acid results in the formation of spherical nanoparticles at the interface.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2017 Elsevier Ltd. This is an author produced version of a paper published in Electrochimica Acta. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Palladium; Electrodeposition; XANES; Nanoparticles |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 15 Mar 2017 10:26 |
Last Modified: | 14 Mar 2018 01:38 |
Published Version: | https://doi.org/10.1016/j.electacta.2017.03.059 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.electacta.2017.03.059 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:113615 |