11. A comparative study of nanolaminate CrN/Mo2N and CrN/W2N as hard and corrosion resistant coatingsMarco Beltrami, Andraž Mavrič, Simone Dal Zilio, Mattia Fanetti, Gregor Kapun, Marco Lazzarino, Orfeo Sbaizero, Miha Čekada, 2013, original scientific article Abstract: Nanolaminate coatings (NLC) consisting of alternated CrN coupled with either cubic tungsten nitride (β-W2N) or molybdenum nitride (γ-Mo2N) were deposited on cold worked tool steel substrates using reactive DC reactive magnetron sputtering for improved mechanical and corrosion resistance. The CrN/γ-Mo2N and CrN/β-W2N nanolaminate systems were found to perform better than the corresponding single-layer systems, with both mechanical and electrochemical properties improving by decreasing the individual layer thickness from 100 to 5 nm. The CrN/β-W2N NLC combined the high hardness value of W2N with the low corrosion current of CrN. The CrN/γ-Mo2N NLC showed synergistic improvements consisting of both higher hardness and lower corrosion currents with respect to the constituent materials alone. The dependence of mechanical and corrosion properties on the bilayer period is discussed in terms of the grain size, residual stresses and texture of the constituent materials and the nanostructured character of the multilayer architecture. Keywords: Nanolayered coatings, Transition metal nitrides, Sputtering, Nanoindentation, Corrosion resistance, Mechanical properties Published in RUNG: 12.01.2023; Views: 1088; Downloads: 0 This document has many files! More... |
12. V-ORAL17c: Cationic Covalent Organic Polymer for Bacterial Cell Detection by Electrochemical Impedance SpectroscopyTina Skorjanc, Andraz Mavric, Mads Nybo Sorensen, Gregor Mali, Changzhu Wu, Matjaž Valant, 2022, published scientific conference contribution Keywords: Electrochemical impedance spectroscopy, polymers, Menshutkin reaction, porphyrin, sensor Published in RUNG: 30.11.2022; Views: 1022; Downloads: 0 This document has many files! More... |
13. Cationic Covalent Organic Polymer Thin Film for Label-free Electrochemical Bacterial Cell DetectionTina Skorjanc, Andraž Mavrič, Mads Nybo Sorensen, Gregor Mali, Changzhu Wu, Matjaž Valant, 2022, original scientific article Keywords: Bacteria, Electrical properties, Electrochemical cells, Electrodes, Sensors Published in RUNG: 26.09.2022; Views: 1095; Downloads: 24 Full text (4,87 MB) |
14. Covalent polymer thin films for biosensor applicationsTina Skorjanc, Andraž Mavrič, Mads Nybo Sorensen, Gregor Mali, Changzhu Wu, Matjaž Valant, 2022, published scientific conference contribution abstract Keywords: bacteria, sensing, electrochemical impedance spectroscopy, electrophoresis, electrode preparation, Menshutkin reaction Published in RUNG: 26.09.2022; Views: 1108; Downloads: 0 This document has many files! More... |
15. Biopolymers produced by treating waste brewer’s yeast with active sludge bacteria : the qualitative analysis and evaluation of the potential for 3D printingGregor Drago Zupančič, Anamarija Lončar, Sandra Budžaki, Mario Panjicko, 2022, original scientific article Keywords: brewers’ yeast, active sludge bacteria, anaerobic digestion, biogas potential, biopolymer, 3D printing Published in RUNG: 01.08.2022; Views: 1496; Downloads: 23 Link to full text This document has many files! More... |
16. Polythiacalixarene-embedded gold nanoparticles for visible-light-driven photocatalytic CO [sub] 2 reductionTina Škorjanc, Kamal Khaja Mohaideen, Ayesha Alkhoori, Gregor Mali, Abdul Khayum Mohammed, Zouhair Asfari, Kyriaki Polychronopoulou, Blaž Likozar, Ali Trabolsi, Dinesh Shetty, 2022, original scientific article Keywords: Gold, Materials, Metal nanoparticles, Photocatalysis, Polymers Published in RUNG: 13.07.2022; Views: 1360; Downloads: 0 This document has many files! More... |
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18. Resolucija o nacionalnem programu visokega šolstva do 2030Zdravko Kačič, Igor Papič, Klavdija Kutnar, Mladen Franko, Ludvik Toplak, Blaž Nardin, Gregor Polančič, Peter Purg, Omar Smajlović, Boštjan Zalar, Boštjan Gorjup, 2022, treatise, preliminary study, study Keywords: visoko šolstvo, Republika Slovenija, nacionalni programi Published in RUNG: 17.05.2022; Views: 1474; Downloads: 0 This document has many files! More... |
19. Insight into the interdependence of Ni and Al in bifunctional Ni/ZSM-5 catalysts at the nanoscaleHue-Tong Vu, Iztok Arčon, Danilo Oliveira de Souza, Simone Pollastri, Goran Dražić, Janez Volavšek, Gregor Mali, Nataša Zabukovec Logar, Nataša Novak Tušar, 2022, original scientific article Abstract: Catalyst design is crucial for improving catalytic activity and product selectivity. In a bifunctional Ni/ZSM-5
zeolite type catalyst, catalytic properties are usually tuned via varying Al and Ni contents. While changes in
acid properties associated with Al sites are usually closely investigated, Ni phases, however, receive
inadequate attention. Herein, we present a systematic structural study of Ni in the Ni/ZSM-5 materials by
using Ni K-edge XANES and EXAFS analyses, complemented by XRD and TEM, to resolve the changes in
the local environment of Ni species induced by the different Al contents of the parent ZSM-5 prepared
by a “green”, template free technique. Ni species in Ni/ZSM-5 exist as NiO crystals (3–50 nm) and as
charge compensating Ni2+ cations. The Ni K-edge XANES and EXAFS results enabled the quantification
of Ni-containing species. At a low Al to Si ratio (nAl/nSi # 0.04), the NiO nanoparticles predominate in
the samples and account for over 65% of Ni phases. However, NiO is outnumbered by Ni2+ cations
attached to the zeolite framework in ZSM-5 with a high Al to Si ratio (nAl/nSi ¼ 0.05) due to a higher
number of framework negative charges imparted by Al. The obtained results show that the number of
highly reducible and active NiO crystals is strongly correlated with the framework Al sites present in
ZSM-5 zeolites, which depend greatly on the synthesis conditions. Therefore, this kind of study is
beneficial for any further investigation of the catalytic activities of Ni/ZSM-5 and other metal-modified
bifunctional catalysts. Keywords: Ni/ZSM-5 catalysts, zeolite, Ni XANES, EXAFS Published in RUNG: 11.05.2022; Views: 1500; Downloads: 42 Full text (1,25 MB) This document has many files! More... |
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