1. Iridium stabilizes ceramic titanium oxynitride support for oxygen evolution reactionGorazd Koderman Podboršek, Luka Suhadolnik, Anja Logar, Marjan Bele, Armin Hrnjić, Živa Marinko, Janez Kovač, Anton Kokalj, Lea Gašparič, Angelja Kjara Surca, Ana Rebeka Kamšek, Goran Dražić, Miran Gaberšček, Nejc Hodnik, Primož Jovanovič, 2022, original scientific article Published in DiRROS: 07.05.2025; Views: 996; Downloads: 385
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2. Unveiling the potential of ▫$(CoFeNiMnCr)_3O_4$▫ high-entropy oxide synthesized from CoFeNiMnCr high-entropy alloy for efficient oxygen-evolution reactionBarbara Ljubec Božiček, Jitka Hreščak, Monika Kušter, Janez Kovač, Iztok Naglič, Boštjan Markoli, Barbara Šetina, Martin Šala, Sandra Drev, Živa Marinko, Miran Čeh, Belisa Alcantara Marinho, 2024, original scientific article Abstract: Electrochemical water-splitting is a promising green technology for the production of hydrogen. One of the bottlenecks, however, is the oxygen evolution half-reaction (OER), which could be overcome with the development of a suitable electrocatalyst. Recently, non-noble metal, high-entropy oxides (HEO) have been investigated as potential OER electrocatalysts, but complex synthesis approaches that usually produce the material in powder form limit their wider utilization. Here, an innovative synthesis strategy of formulating a nanostructured (CoFeNiMnCr)3O4 HEO thin film on a CoFeNiMnCr high entropy alloy (HEA) using facile electrochemical and thermal treatment methods is presented. The CoFeNiMnCr HEA serves as exceptional support to be electrochemically treated in an ethylene glycol electrolyte with ammonium fluoride to form a rough and microporous structure with nanopits. The electrochemically treated CoFeNiMnCr HEA surface is more prone to oxidation during a low-temperature thermal treatment, leading to the growth of a spinel (CoFeNiMnCr)3O4 HEO thin film. The (CoFeNiMnCr)3O4 HEO exhibits a superior overpotential of 341 mV at 10 mA cm−2 and a Tafel slope of 50 mV dec−1 along with remarkable long-term stability in alkaline media. The excellent catalytic activity and stability for the OER can serve as a promising platform for the practical utilization of (CoFeNiMnCr)3O4 HEO.
Keywords: electrochemical water-spliting, electrocatalysts
Published in DiRROS: 20.12.2024; Views: 1329; Downloads: 468
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3. Photocatalytic, electrocatalytic and photoelectrocatalytic degradation of pharmaceuticals in aqueous media : analytical methods, mechanisms, simulations, catalysts and reactorsBelisa Alcantara Marinho, Luka Suhadolnik, Blaž Likozar, Matej Huš, Živa Marinko, Miran Čeh, 2022, review article Keywords: advanced oxidation process, persistent organic compounds, pharmaceutical by- products, degradation mechanism, reactor design, analytical methods
Published in DiRROS: 10.03.2022; Views: 1913; Downloads: 1367
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4. Increasing the oxygen-evolution reaction performance of nanotubular titanium oxynitride-supported Ir nanoparticles by a strong metal - support InteractionMarjan Bele, Primož Jovanovič, Živa Marinko, Sandra Drev, Vid Simon Šelih, Janez Kovač, Miran Gaberšček, Gorazd Koderman Podboršek, Goran Dražić, Nejc Hodnik, Anton Kokalj, Luka Suhadolnik, 2020, original scientific article Published in DiRROS: 26.11.2020; Views: 3725; Downloads: 2000
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