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143. 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: 412; Prenosov: 195
 Celotno besedilo (1,75 MB)
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146. Influence of alumina precursor properties on Cu-Fe alumina supported catalysts for total toluene oxidation as a model volatile organic air pollutantTadej Žumbar, Alenka Ristić, Goran Dražić, Hristina Lazarova, Janez Volavšek, Albin Pintar, Nataša Zabukovec Logar, Nataša Novak Tušar, 2021, izvirni znanstveni članek Ključne besede: alumina precursors, Cu-FeAl12O3 catalysts, heterogeneous catalysis, nanostructures, toulene total catalytic oxidation
Objavljeno v DiRROS: 17.11.2022; Ogledov: 520; Prenosov: 261
Celotno besedilo (9,37 MB)
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148. Tailoring water adsorption capacity of APO-TricSuzana Mal, Alenka Ristić, Amalija Golobič, Nataša Zabukovec Logar, 2021, izvirni znanstveni članek Ključne besede: APO-Tric, water adsorption capacity, thermal energy storage, green ionothermal synthesis, single-crystal structure determination
Objavljeno v DiRROS: 16.11.2022; Ogledov: 437; Prenosov: 373
Celotno besedilo (30,05 MB)
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150. On the nanoscale structural evolution of solid discharge products in lithium-sulfur batteries using operando scatteringChristian Prehal, Jean-Marc von Mentlen, Sara Drvarič Talian, Alen Vižintin, Robert Dominko, Heinz Amentisch, Lionel Porcar, Stefan A. Freunberger, Vanessa Wood, 2022, izvirni znanstveni članek Objavljeno v DiRROS: 14.11.2022; Ogledov: 343; Prenosov: 199
Celotno besedilo (4,04 MB)
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