Elgar, C. E., Ravenhill, S., Hunt, P., Jacobson, B., Feeney, A. , Prentice, P. , Ryder, K. S. and Abbott, A. P. (2024) Using ultrasound to increase copper and nickel dissolution and prevent passivation using concentrated ionic fluid. Electrochimica Acta, 476, 143707. (doi: 10.1016/j.electacta.2023.143707)
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Abstract
This paper uses targeted ultrasound on a surface undergoing anodic dissolution. The aim of these experiments was to etch metals that would normally passivate. The study was carried out in deep eutectic solvents (DESs) as these are technologically useful for metal processing but suffer the disadvantages of being viscous and hence have slow mass transport which results in metal passivation. Linear sweep voltammetry showed a linear current-voltage response at potentials anodic (more positive) of the oxidation potential under sonication. Passivation was observed in silent conditions. It was also shown that the dissolution current was roughly 14 times larger under sonication. High speed imaging showed asymmetric bubble collapse leading to enhanced removal of material from the surface with etch rates as high as 3.8 μm.min–1 under ultrasonic conditions.
| Item Type: | Articles |
|---|---|
| Additional Information: | The authors would like to thank the Engineering and Physical Sciences Research Council (EPSRC) Sonocat project (EP/W018632/1), the EPSRC funded Future of Ultrasonic Engineering CDT (grant EP/S023879/1), the Natural Environment Research Council (NERC) CENTA2 research grant (NE/S007350/1), and the UKRI Interdisciplinary Circular Economy Centre for Technology Metals, Met4Tech project (EP/V011855/1) for funding this work. |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Feeney, Dr Andrew and Prentice, Dr Paul and Jacobson, Mr Ben |
| Creator Roles: | Jacobson, B.Investigation, Formal analysis, Writing – original draft, Writing – review and editing Feeney, A.Supervision, Funding acquisition, Writing – original draft, Writing – review and editing Prentice, P.Supervision, Funding acquisition, Writing – original draft, Writing – review and editing |
| Authors: | Elgar, C. E., Ravenhill, S., Hunt, P., Jacobson, B., Feeney, A., Prentice, P., Ryder, K. S., and Abbott, A. P. |
| College/School: | College of Science and Engineering > School of Engineering > Systems Power and Energy |
| Journal Name: | Electrochimica Acta |
| Publisher: | Elsevier |
| ISSN: | 0013-4686 |
| ISSN (Online): | 1873-3859 |
| Published Online: | 22 December 2023 |
| Copyright Holders: | Copyright © 2023 Published by Elsevier Ltd |
| First Published: | First published in Electrochimica Acta 476:143707 |
| Publisher Policy: | Reproduced under a Creative Commons license |
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