| Title: | Functionalization of FeCoNiCu medium entropy alloy via nitridation and anodic oxidation for enhanced oxygen evolution and glycerol oxidation |
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| Authors: | ID Suhadolnik, Luka (Author)
ID Smiljanić, Milutin (Author)
ID Bele, Marjan (Author)
ID Nuhanović, Mejrema (Author)
ID Finšgar, Matjaž (Author)
ID Maselj, Nik (Author)
ID Neumüller, Daniela (Author)
ID Rafailović, Lidija D. (Author)
ID Hodnik, Nejc (Author) |
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| Files: |  URL - Source URL, visit https://pub.iapchem.org/ojs/index.php/JESE/article/view/2637
 PDF - Presentation file, download (853,81 KB)
MD5: A9BF62D75811FCEB02658757CF286414
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  KI - National Institute of Chemistry
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| Abstract: | Medium entropy alloys (MEAs) have emerged as a promising class of materials for electro-catalysis due to their tunableproperties and exceptional catalytic performance. This study successfully functionalized a bulk FeCoNiCu alloy using a combined anodic oxidation (AO) and nitridation (NT) approach to produce a highly porous, thin-film catalyst. The hierarchical structure formed during the surface treatments enhances the material's specific surface area and alters the oxidation states of the constituent metals, creating abundant active sites. The electrocatalytic performance of themodified bulk FeCoNiCu electrode was evalu-ated for both the oxygen evolution reaction (OER) and glycerol oxidation reaction (GOR) in an alkaline electrolyte. Remarkably, the AO-NT-treated catalyst exhibited superior activity for OER, surpassing commercial IrOx benchmarks with lower overpotential requirements. For GOR, the FeCoNiCu electrode demonstrated excellent performance by significantly reducing energy input compared to OER, highlighting its potential as a dual-purpose catalyst for alkaline water splitting. Post-reaction product analysis via NMR confirmed the formation of value-added chemicals, with formic acid identified as the main product. These results underline the feasibility of surface-modified MEAs for sustainable energy and chemical production applications, offering a cost-effective alternative to noble metal-based catalysts. |
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| Keywords: | medium entropy alloy, surface modification, electrocatalysis, oxygen evolution reaction, glycerol oxidation |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 01.01.2025 |
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| Publisher: | International Association of Physical Chemists |
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| Year of publishing: | 2025 |
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| Number of pages: | str. 1-11 |
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| Numbering: | Vol. 15, no. 1, [article no.] 2637 |
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| PID: | 20.500.12556/DiRROS-21918  |
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| UDC: | 544.5/.6 |
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| ISSN on article: | 1847-9286 |
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| DOI: | 10.5599/jese.2637 |
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| COBISS.SI-ID: | 229468675 |
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| Copyright: | © 2025 by the authors; licensee IAPC, Zagreb, Croatia. |
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| Note: | Nasl. z nasl. zaslona;
Soavtorji: Milutin Smiljanić, Marjan Bele, Mejrema Nuhanović, Matjaž Finšgar, Nik Maselj, Daniela Neumüller, Lidija D. Rafailović and Nejc Hodnik;
Opis vira z dne 19. 3. 2025;
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| Publication date in DiRROS: | 10.04.2025 |
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| Views: | 621 |
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| Downloads: | 343 |
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