20.500.12556/DiRROS-21918 Functionalization of FeCoNiCu medium entropy alloy via nitridation and anodic oxidation for enhanced oxygen evolution and glycerol oxidation 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. medium entropy alloy surface modification electrocatalysis oxygen evolution reaction glycerol oxidation elektrokataliza reakcija sproščanja kisika oksidacija glicerola entropijske zlitine true false true International Association of Physical Chemists Angleški jezik Slovenski jezik © 2025 by the authors; licensee IAPC, Zagreb, Croatia. Neznano 2025-04-10 14:29:54 2025-04-10 14:43:27 2025-10-24 03:50:11 0000-00-00 00:00:00 2025 0 0 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; str. 1-11 no. 1, [article no.] 2637 Vol. 15 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2025-01-01 544.5/.6 1847-9286 10.5599/jese.2637 229468675 https://pub.iapchem.org/ojs/index.php/JESE/article/view/2637 0 f5e27cce-1608-11f0-963a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=31618 RAZ_Suhadolnik_Luka_2025.pdf RAZ_Suhadolnik_Luka_2025.pdf 1 A9BF62D75811FCEB02658757CF286414 de3273850b62cdf3a3b4f6f9160bc8efb8600bc544a3cfc99fb15c67bfcdd3bc 02d27050-1609-11f0-963a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=31619 Kemijski inštitut 0 0 0