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The synthesis, surface analysis, and cellular response of titania and titanium oxynitride nanotube arrays prepared on TiAl6V4 for potential biomedical applications
Katja Andrina Kravanja, Luka Suhadolnik, Marjan Bele, Uroš Maver, Jan Rožanc, Željko Knez, Maša Knez Marevci, Matjaž Finšgar, 2023, original scientific article

Abstract: Titania nanotubes are gaining prominence in the biomedical field as implant materials due to their mechanical durability, nano-rough properties, and positive influence on cellular response. This work aimed to synthesize titania and titanium oxynitride (TieOeN) nano- tubular arrays on TiAl6V4 substrates using an anodic oxidation process followed by annealing in air or by additional nitridation in NH3 atmosphere. Different nanotubular layers of unique morphology and structure were fabricated and investigated using advanced surface analysis and biocompatibility tests. In-depth surface analysis was per- formed by field emission scanning electron microscopy (FE-SEM), atomic force microscopy (AFM), 3D profilometry, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and time-of-flight secondary ion mass spectroscopy (ToF-SIMS). Cell testing using adipose- derived mesenchymal stem cells and human fetal osteoblasts demonstrated good cell viability, high proliferative capacity, and a favorable overall effect on cell morphology for the TieOeN nanotubes.
Keywords: surface analysis, XPS, AFM, tandem ToF-SIMS, titania nanotubes, Ti-O-N nanotubes, anodization
Published in DKUM: 07.05.2024; Views: 121; Downloads: 8
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Superkritični CO2, čistejša alternativa tradicionalnim metodam procesiranja polimernih biomaterialov
Elena Markočič, Mojca Škerget, Željko Knez, 2009, review article

Keywords: superkritični CO2, polimerni biomateriali, polimerne pene, mikrodelci, kompozitni materiali
Published in DKUM: 19.04.2024; Views: 113; Downloads: 2
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Incorporation of Biologically Active Ingredient Gallic Acid into Nano-scale Lipid Vesicles
Nika Kučuk, Mateja Primožič, Željko Knez, Maja Leitgeb, 2023, original scientific article

Keywords: nano-scale, gallic acid, lipid vesicle
Published in DKUM: 18.04.2024; Views: 106; Downloads: 4
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Efficient Removal of Cr(VI) Ions from Aqueous Solutions using Arabinogalactan Coated Magnetic Nanoparticles
Katja Vasić, Mateja Primožič, Željko Knez, Maja Leitgeb, 2023, original scientific article

Keywords: magnetic nanoparticles, heavy metals, chromium
Published in DKUM: 18.04.2024; Views: 81; Downloads: 2
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Carbonization of Class G well cement containing metakaolin under supercritical and saturated environments
Gregor Kravanja, Željko Knez, 2023, original scientific article

Keywords: well cement, carbonization, metakaolin, supercritical CO2, gas saturated solution, CaCo3
Published in DKUM: 15.04.2024; Views: 142; Downloads: 13
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