This title appears in the Scientific Report :
2016
Please use the identifier:
http://dx.doi.org/10.1038/ncomms13164 in citations.
Please use the identifier: http://hdl.handle.net/2128/12910 in citations.
Platinum recycling going green via induced surface potential alteration enabling fast and efficient dissolution
Platinum recycling going green via induced surface potential alteration enabling fast and efficient dissolution
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...
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Personal Name(s): | Hodnik, Nejc (Corresponding author) |
---|---|
Baldizzone, Claudio / Polymeros, George / Geiger, Simon / Grote, Jan-Philipp / Cherevko, Serhiy / Mingers, Andrea / Zeradjanin, Aleksandar / Mayrhofer, Karl (Corresponding author) | |
Contributing Institute: |
Helmholtz-Institut Erlangen-Nürnberg Erneuerbare Energien; IEK-11 |
Published in: | Nature Communications, 7 (2016) S. 13164 - |
Imprint: |
London
Nature Publishing Group
2016
|
DOI: |
10.1038/ncomms13164 |
PubMed ID: |
27767178 |
Document Type: |
Journal Article |
Research Program: |
Renewable energy and material resources for sustainable futures - Integrating at different scales Electrolysis and Hydrogen |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/12910 in citations.
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. |