1. Periodic anti-phase boundaries and crystal superstructures in ▫$PtCu_3$▫ nanoparticles as fuel cell electrocatalystsAna Rebeka Kamšek, Anton Meden, Iztok Arčon, Primož Jovanovič, Martin Šala, Francisco Ruiz-Zepeda, Goran Dražić, Miran Gaberšček, Marjan Bele, Nejc Hodnik, 2023, izvirni znanstveni članek Objavljeno v DiRROS: 28.08.2023; Ogledov: 86; Prenosov: 40
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4. Semiquantitative analysis for high-speed mapping applications of biological samples using LA-ICP-TOFMSDino Metarapi, Andreas Schweikert, Ana Jerše, Martin Schaier, Johannes Teun van Elteren, Gunda Koellensperger, Sarah Theiner, Martin Šala, 2023, izvirni znanstveni članek Objavljeno v DiRROS: 04.07.2023; Ogledov: 74; Prenosov: 39
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5. Mechanistic study of fast performance decay of PtCu alloy-based catalyst layers for polymer electrolyte fuel cells through electrochemical impedance spectroscopyMaximilian Grandi, Matija Gatalo, Ana Rebeka Kamšek, Gregor Kapun, Kurt Mayer, Francisco Ruiz-Zepeda, Martin Šala, Bernhard Marius, Marjan Bele, Nejc Hodnik, Merit Bodner, Miran Gaberšček, Viktor Hacker, 2023, izvirni znanstveni članek Ključne besede: PEFC, catalyst layer, platinum–copper, degradation, ionomer, electrochemical impedance spectroscopy, membrane electrode assembly
Objavljeno v DiRROS: 23.06.2023; Ogledov: 140; Prenosov: 59
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7. Characterization of fresh PM deposits on calcareous stone surfaces : seasonality, source apportionment and soiling potentialMonika Ogrizek, Asta Gregorič, Matic Ivančič, Daniele Contini, Urša Skube, Kristijan Vidović, Marjan Bele, Martin Šala, Marta Klanjšek Gunde, Martin Rigler, Eva Menart, Ana Kroflič, 2023, izvirni znanstveni članek Objavljeno v DiRROS: 24.11.2022; Ogledov: 341; Prenosov: 257
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10. Controlled growth of ZnO nanoparticles using ethanolic root extract of Japanese knotweed : photocatalytic and antimicrobial propertiesMiha Ravbar, Ajda Kunčič, Lev Matoh, Sonja Smole Možina, Martin Šala, Andraž Šuligoj, 2022, izvirni znanstveni članek Povzetek: Synthesis of zinc oxide (ZnO) nanoparticles (NPs) was mediated by plant extracts to assist in the reduction of zinc atoms during the synthesis and act as a capping agent during annealing.The preparation used ethanolic extracts from the roots of Japanese knotweed (Fallopia japonica). Two major outcomes could be made. (i)A synergistic effect of multiple polyphenolic components in the extract is needed to achieve the capping effect of crystallite growth during thermal annealing at 450 °C characterized by an exponential growth factor (n) of 4.4 compared to n = 3 for bare ZnO. (ii) Synergism between the ZnO NPs and plant extracts resulted in superior antimicrobial activity against both Gram-positive bacteria, e.g., Staphylococcus aureus, and Gram-negative bacteria, e.g., Escherichia coli and Campylobacter jejuni. The materials were also tested for their antimicrobial activity against S. aureus under ultraviolet (UV) illumination. Also here, the photocatalyst prepared with plant extracts was found to be superior. The residues of the plant extract molecules on the surface of the catalyst were identified as the main cause of the observed differences, as proved by thermal gravimetry. Such a preparation using ethanolic extract of Fallopia japonica could serve as a more controlled synthesis of ZnO and potentially other metal oxides, with low environmental impact and high abundance in nature.
Objavljeno v DiRROS: 21.11.2022; Ogledov: 251; Prenosov: 108
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