Platinum recycling going green via induced surface potential alteration enabling fast and efficient dissolution
Hodnik N, Baldizzone C, Polymeros G, Geiger S, Grote JP, Cherevko S, Mingers A, Zeradjanin A, Mayrhofer K (2016)
Publication Status: Published
Publication Type: Journal article
Publication year: 2016
Journal
Publisher: NATURE PUBLISHING GROUP
Book Volume: 7
Article Number: ARTN 13164
DOI: 10.1038/ncomms13164
Abstract
The recycling of precious metals, for example, platinum, is an essential aspect of sustainability for the modern industry and energy sectors. However, due to its resistance to corrosion, platinum-leaching techniques rely on high reagent consumption and hazardous processes, for example, boiling aqua regia; a mixture of concentrated nitric and hydrochloric acid. Here we demonstrate that complete dissolution of metallic platinum can be achieved by induced surface potential alteration, an 'electrode-less' process utilizing alternatively oxidative and reductive gases. This concept for platinum recycling exploits the so-called transient dissolution mechanism, triggered by a repetitive change in platinum surface oxidation state, without using any external electric current or electrodes. The effective performance in non-toxic low-concentrated acid and at room temperature is a strong benefit of this approach, potentially rendering recycling of industrial catalysts, including but not limited to platinum-based systems, more sustainable.
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Germany (DE)How to cite
APA:
Hodnik, N., Baldizzone, C., Polymeros, G., Geiger, S., Grote, J.-P., Cherevko, S.,... Mayrhofer, K. (2016). Platinum recycling going green via induced surface potential alteration enabling fast and efficient dissolution. Nature Communications, 7. https://doi.org/10.1038/ncomms13164
MLA:
Hodnik, Nejc, et al. "Platinum recycling going green via induced surface potential alteration enabling fast and efficient dissolution." Nature Communications 7 (2016).
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