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  Platinum recycling going green via induced surface potential alteration enabling fast and efficient dissolution

Hodnik, N., Baldizzone, C., Polymeros, G., Geiger, S., Grote, J.-P., Cherevko, S., et al. (2016). Platinum recycling going green via induced surface potential alteration enabling fast and efficient dissolution. Nature Communications, 7: 13164. doi:10.1038/ncomms13164.

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2016-10-21_nature_communications_platiunum_recycling_going_green_via_induced_surface_potential_alteration.pdf (Verlagsversion), 545KB
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2016-10-21_nature_communications_platiunum_recycling_going_green_via_induced_surface_potential_alteration.pdf
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Hodnik, Nejc1, 2, Autor           
Baldizzone, Claudio2, 3, Autor           
Polymeros, George2, Autor           
Geiger, Simon2, Autor           
Grote, Jan-Philipp2, Autor           
Cherevko, Serhiy2, 4, Autor           
Mingers, Andrea Maria2, Autor           
Žeradjanin, Aleksandar R.2, 4, Autor           
Mayrhofer, Karl J. J.2, 4, 5, Autor           
Affiliations:
1National Institute of Chemistry, Hajdrihova 19, Ljubljana, Slovenia, ou_persistent22              
2Electrocatalysis, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863354              
3Forschungszentrum Jülich GmbH, Helmholtz Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Egerlandstraße 3, 91058 Erlangen, Germany, ou_persistent22              
4Helmholtz-Institute Erlangen-Nuremberg for Renewable Energy (IEK-11), Forschungszentrum Jülich, Egerlandstrasse 3, 91058 Erlangen, Germany, ou_persistent22              
5Department of Chemical and Biological Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany , ou_persistent22              

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Schlagwörter: FUEL-CELL CATALYST; ACIDIC MEDIA; GROUP METALS; SPENT CATALYSTS; NOBLE-METALS; ELECTROCATALYST; CORROSION; EXTRACTION; RECOVERY;
 Zusammenfassung: 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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Sprache(n): eng - English
 Datum: 2016-06-152016-10-212016
 Publikationsstatus: Erschienen
 Seiten: 6
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: ISI: 000385842600001
DOI: 10.1038/ncomms13164
 Art des Abschluß: -

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Titel: Nature Communications
  Kurztitel : Nat. Commun.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: London : Nature Publishing Group
Seiten: - Band / Heft: 7 Artikelnummer: 13164 Start- / Endseite: - Identifikator: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723