A new approach to electropolishing of pure Ti foil in acidic solution at room temperature for the formation of ordered and long TiO2 nanotube arrays

Asgari, V.; Noormohammadi, Mohammad; Ramazani, A.; Kashi, M. Almasi

doi:10.1016/j.corsci.2018.02.040

Cited by 17 publications

(5 citation statements)

References 32 publications

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“…Similar ripple-like structures were reported by Asgari et al. [49] on pure Ti surface after electropolishing with a different acidic electrolyte from the one used in the present work for TMF alloy.…”

Section: Resultssupporting

confidence: 90%

Electrochemical and in vitro biological behaviors of a Ti-Mo-Fe alloy specifically designed for stent applications

Bortolan¹,

Copes²,

Shekargoftar³

et al. 2023

Biomaterials and Biosystems

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Section: Resultssupporting

confidence: 90%

Electrochemical and in vitro biological behaviors of a Ti-Mo-Fe alloy specifically designed for stent applications

Bortolan¹,

Copes²,

Shekargoftar³

et al. 2023

Biomaterials and Biosystems

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“…Observed behaviours are in accordance with results from the literature [22,31]. Different surface treatments of the starting titanium foils influence the amount of chemical impurities on the titanium surface and lead to a distinct electrochemical behaviour.…”

Section: Nanotubes' Lengthsupporting

confidence: 90%

“…The nanotubes' uniformity can be improved by (i) repeated anodization of the same substrate, after removing the anodized layer grown in the previous anodization [19] or (ii) with the polishing of the titanium surface, with mechanical, chemical or electropolishing techniques [17]. The process of electropolishing consists of three synergistic reactions: anodic dissolution, oxygen evolution, and the formation of a passive oxide film [22]. After applying a voltage between the titanium anode and the cathode, Ti 4+ cations diffuse into the electrolyte.…”

Section: Introductionmentioning

confidence: 99%

The Influence of a Surface Treatment of Metallic Titanium on the Photocatalytic Properties of TiO2 Nanotubes Grown by Anodic Oxidation

et al. 2020

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Titanium dioxide (TiO2) nanotubes obtained by the anodic oxidation of titanium metal foils can be used for the photocatalytic degradation of organic pollutants. The aim of our study was to determine the influence of the titanium foil’s surface treatment on the final morphology of the TiO2 nanotubes and their photocatalytic activity. In our experiments, we used two different titanium foils that were electropolished or untreated prior to the anodic oxidation. The morphologies of the starting titanium foils and the resulting TiO2 nanotube layers were investigated and the photocatalytic activities measured by the decomposition of caffeine under UV irradiation. Our results showed that electropolishing of the starting foils produced a more uniform and smoother TiO2 nanotubes surface. In contrast, the TiO2 nanotube surfaces from untreated titanium foils mimic the initial surface roughness of the titanium foil. A comparison of the photocatalytic properties of the TiO2 nanotube layers obtained from the untreated and electropolished titanium foils showed that electropolishing does not necessarily improve the photocatalytic properties of the resulting TiO2 nanotube layer. It was found that the determining factors influencing the photocatalytic activity are the chemical impurities (Ti-nitride) on the surface of the titanium foils and the surface roughness of the TiO2 nanotube layer. The highest photocatalytic activity was achieved with the anodized untreated foil with the minimal presence of Ti-nitride and a relatively high roughness of the TiO2 nanotubes.

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“…1,2 Electropolishing has also been extensively employed to create surface nanopatterns-ordered or quasi-ordered nanostructures such as hexagons and stripes-in various metals such as Zn, 3 Al, [4][5][6] Ti, 7 Ta, 8 and some alloys. 9 Nanopatterned metals have been used for fabrication of high precision diffraction gratings, 10 preparation of ordered anodized oxide films or nanotubes, [11][12][13][14][15] and fabrication of implanted parts with enhanced interfacial adhesion strength. [16][17][18] Nanopatterned aluminum (Al) has been used for preparing ordered anodized aluminum oxide films with controlled morphology; [11][12][13] there were studies demonstrating the potential of nanopatterned Al for quantum-dot based nano-electronic devices.…”

mentioning

confidence: 99%

Crystallographic Orientation Dependence of Nanopattern Morphology and Size in Electropolished Polycrystalline and Monocrystalline Aluminum: An EBSD and SEM Study

Yuan

Zhang

et al. 2020

J. Electrochem. Soc.

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Electropolishing of aluminum (Al) has been applied to form surface nanopatterns of various morphologies and sizes. However, the effect of crystallographic orientation on nanopattern morphology and size in electropolished Al is unclear. Here, annealed polycrystalline and monocrystalline Al samples were electropolished at 40 V in an electrolyte of perchloric acid, ethanol, butyl cellusolve and water, the correlation between crystallographic orientation and nanopattern morphology and size was firmly established through systematic EBSD and SEM examination. Heterogeneity in nanopattern morphology and nanopattern size is induced by crystallographic anisotropy of grains. Nanopattern morphology and size change gradually for grains and planes oriented with varying misorientation angles against each primary direction [101]//ND, [101]//ND and [111]//ND. The transitions between nanopattern morphologies also occur for grain surface planes with near identical misorientation angles. The surface structure sensitivity of nanopattern morphology and size was firmly established and then qualitatively explained by invoking step-terrace and step-ledge surface structure models and by developing a refined adsorption-diffusion perspective based on a reported theoretical model. The findings reported here contribute significantly to gaining new insights into the crystallographic orientation dependence of nanopattern morphology and nanopattern size in electropolished Al and other metals.

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A new approach to electropolishing of pure Ti foil in acidic solution at room temperature for the formation of ordered and long TiO2 nanotube arrays

Cited by 17 publications

References 32 publications

Electrochemical and in vitro biological behaviors of a Ti-Mo-Fe alloy specifically designed for stent applications

Electrochemical and in vitro biological behaviors of a Ti-Mo-Fe alloy specifically designed for stent applications

The Influence of a Surface Treatment of Metallic Titanium on the Photocatalytic Properties of TiO2 Nanotubes Grown by Anodic Oxidation

Crystallographic Orientation Dependence of Nanopattern Morphology and Size in Electropolished Polycrystalline and Monocrystalline Aluminum: An EBSD and SEM Study

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