Variation on wettability of anodic zirconium oxide nanotube surface

Wang, Luning; Shen, Chen; Shinbine, Alyssa; Luo, Jing

doi:10.1016/j.tsf.2013.01.066

Cited by 15 publications

(7 citation statements)

References 29 publications

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“…This indicates that the hydrophilicity of the Ti20Nb nanotubes exhibits an increasing trend, since the surface becomes less hydrophilic with anodization voltage increasing from 20 to 60 V. This is likely because water easily ingresses into the smaller opening diameter tubes than the wider tubes. A similar phenomenon was observed in previous work on ZrNTs with different diameters [26]. In addition, hightemperature annealing would remove hydrogen groups, and thus, obtained annealed samples are less hydrophilic than the parent samples.…”

Section: Wettability Of Anodic Nanotubular Arrayssupporting

confidence: 85%

Fabrication and characterization of anodic oxide nanotubes on TiNb alloys

Jin

Qiao

et al. 2016

Rare Met.

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Titanium and its alloys have been extensively used as implant materials owing to their high specific strength, good biocompatibility and excellent corrosion resistance. Oxide nanotubular array layer can be formed on Ti alloy surface by electrochemical anodization treatment. In this work, the morphology of nanotubes formed on Ti-Nb alloys (Nb content of 5 wt%, 10 wt%, 20 wt%, 30 wt% and 40 wt%) was investigated using an electrolyte containing ethylene glycol and NH 4 F. Oxide layers consisting of highly ordered nanotubes with a range of diameters (approximately 40-55 nm for the inner diameter and 100-120 nm for the outer diameter) and lengths (approximately 10-20 lm) can be formed on alloys in the Ti-xNb system, independent on the Nb content. The nanotubes formed on the Ti-Nb alloy surface were transformed from the anatase to rutile structure of titanium oxide. The oxide nanotubular surface is highly hydrophilic compared with the intact TiNb foil. The surface wettability varies with the nanotube diameter. As the nanotube diameter increases while the nanotube layer thickness remains constant, the capillary wetting of the nanotube surface decreases and the surface becomes less hydrophilic. Annealing changes the nanotubular surface wettability further and establishes less hydrophilic surface conditions due to the removal of hydroxyl groups and residue fluoridecontaining species. It is believed that the surface wettability is changed due to the decreasing content of hydroxyl groups in ambient atmosphere. This work can provide guidelines for improving structural and environmental conditions responsible for changing surface wettability of TiNb surfaces for biomedical applications.

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Section: Wettability Of Anodic Nanotubular Arrayssupporting

confidence: 85%

Fabrication and characterization of anodic oxide nanotubes on TiNb alloys

Jin

Qiao

et al. 2016

Rare Met.

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“…[19], [20] There appear a few variations in theory and experimental and may be attributed to the physical limits of experimental measurement as described earlier. In comparison to previous reports by Wang et al, [14] this is the first reported observation of superhydrophobic WCA on functionalized ZrNT for (d ≤ 20 nm) produced via a singlestep anodization. Additionally, the WCA of ZrNTs is also independent of length.…”

Section: Baxter Equation Cos(ɵ*) = F*cos(ɵ) -(1-f)contrasting

confidence: 46%

“…[13] Wang et al previously investigated the pristine ZrNT surface wettability, observing highly hydrophilic properties. [14] In the present study, we synthesize ZrO2 nanotubular structures in a single step anodization process without the pre-requisite dip-etching process using HF-acid based etchants. This one-pot synthesis allows for less hazardous and safer working conditions.…”

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confidence: 99%

Wetting Behavior of Zirconia Nanotubes

Raghu

Killian

2021

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“…1(b), in agreement to literature. 15 Aer surface modication with a monolayer of octadecylphosphonic acid, the nanotubes become super-hydrophobic as shown in Fig. 1(c).…”

mentioning

confidence: 93%

“… 14 Wang et al previously investigated the pristine ZrNT surface wettability, observing highly hydrophilic properties. 15 In the present study, we synthesize ZrO 2 nanotubular structures in a single step anodization process without the pre-requisite dip-etching process using HF-acid based etchants. This one-pot synthesis allows for less hazardous and safer working conditions.…”

mentioning

confidence: 99%