Electrolyte effects on the surface chemistry and cellular response of anodized titanium

Ohtsu, Naofumi; Kozuka, Taro; Hirano, Mitsuhiro; Arai, Hirofumi

doi:10.1016/j.apsusc.2015.05.046

Cited by 21 publications

(9 citation statements)

References 22 publications

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“…The Ti 2p 3/2 spectrum of the untreated surface was comprised by an intense titanium dioxide (TiO 2 ) peak at 458.8 eV and a small metallic Ti peak at 453.7 eV, respectively. 24,25 The metallic Ti peak was not detected in the plasma-treated surfaces, indicating that an oxide layer was grown on the substrate through the treatment. The O 1s spectra were composed of three peaks corresponding to the chemical states of O 2− (530.3 eV), OH − (531.9 eV), and H 2 O (533.3 eV).…”

Section: Methodsmentioning

confidence: 99%

Effects of discharge mode and gas composition for plasma‐hydrophilized titanium surface on hydrophilic sustainability

Hirano

Yamane

Ohtsu

2020

Surface & Interface Analysis

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Plasma hydrophilization under various conditions was carried out on Ti substrates to investigate the effect of the applied parameters on the hydrophilic sustainability. The plasma was discharged from gases comprising Ar and/or O2 at various ratios using DC and RF modes. Notable differences in the surface morphology by the plasma conditions was hardly found, while the ratio of hydroxide on the surface was influenced by the discharge mode. The hydrophilicity was significantly improved regardless of the treatment conditions, that is, the gas composition and discharge mode. The deterioration of the hydrophilicity was occurred by storing in the ambient atmosphere or distilled water, wherein the deterioration in distilled water was suppressed when using DC as a discharge mode. The hydrophilicity was preserved when the specimens was stored in a physiological solution such as phosphate buffered saline solution due to the adsorption of Na+ and Cl− in the solution; its effect was far superior to that contributed by the parameter settings. In conclusion, plasma discharge mode enabled to improve the deterioration of hydrophilicity only slightly.

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Section: Methodsmentioning

confidence: 99%

Effects of discharge mode and gas composition for plasma‐hydrophilized titanium surface on hydrophilic sustainability

Hirano

Yamane

Ohtsu

2020

Surface & Interface Analysis

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“…Liang et al [28] created several grooved morphologies on NiTi alloy surface by a femtosecond laser and the cell proliferation rate was found increasing with the increasing culture time due to the modification of the surface oxide with the reduction of Ni content. In addition, it was reported that the formation of a stable TiO 2 layer on a Ti substrate through anodic oxidation suppressed the adsorption of surface contaminants, leading to an improved surface hydrophilicity and enhanced cellular adhesiveness [29]. No significant differences in cell proliferation are found between the lasertreated and untreated samples after 72 h culture.…”

Section: Science China Materialsmentioning

confidence: 99%

Corrosion resistance and cytocompatibility of Ti-20Zr-10Nb-4Ta alloy surface modified by a focused fiber laser

Xue

et al. 2018

Sci. China Mater.

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The corrosion resistance and cytocompatibility of Ti-20Zr-10Nb-4Ta (TZNT) alloy modified by surface laser treatment were investigated. The scanning electron microscopy (SEM) measurements indicated that laser treatment on TZNT alloy generated groove morphologies with the width of 40 μm and the depth of~10 μm on the surface. The water contact angles along the groove direction decreased by 51% compared with that of the untreated alloy. The laser treatment promoted the oxidation of metallic Ti, Zr and Nb and produced more stable oxides on surface. The corrosion potential increased by 50% and corrosion current density decreased by 72% compared with that of the untreated alloy in the anodic polarization test for the alloy in Hank's solution at 37°C. This indicated the improvement of the corrosion resistance by laser treatment. The cytotoxicity testing results showed that the laser-treated TZNT alloy performed similar MC3T3-E1 cell viability compared with the untreated alloy. The cells displayed oriented growth along the groove direction due to the increased hydrophilicity. This novel material may be a new candidate in orthopedics and dentistry implantations fields.

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“…Stainless steel and copper have high conductivity, relatively lower cost, a high specific surface area, and a great scale-up potential, but they are not corrosion resistant, especially in electrolytes containing chloride ions [51,52]. Titanium possesses many advantages, including nontoxicity, good biocompatibility, anti-corrosion characteristics, and, most importantly, good dimensional stability; however, the disadvantage is its poor activity towards electron transfer between titanium and bacteria [49,53,54]. Nickel, as a stable, low-cost electrode with high mechanical strength, has been developed as a surface for biofilm growth [55].…”

Section: Anode Cathode Configurationmentioning

confidence: 99%

Microbial Fuel Cell Membrane Bioreactor in Wastewater Treatment, Electricity Generation and Fouling Mitigation

et al. 2020

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Membrane bioreactors (MBR) have gained much attention due to their ability to achieve higher treatment efficiency. However, high external energy consumption in aeration for membrane fouling mitigation has been limiting their application. Microbial fuel cells (MFC) can ideally extract energy from wastewater in the form of electricity and reduce membrane fouling. Thus, the use of MFC‐MBR is rapidly expanding. However, the MFC‐MBR design and operation is not fully mature and further research is needed to optimize the process efficiency and enhance the applicability. This review gives an overview of recent studies on the performances of MFC‐MBR systems, regarding the design and configuration of the integrated system, irrespective of whether optimization was done or not in the operating system.

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Electrolyte effects on the surface chemistry and cellular response of anodized titanium

Cited by 21 publications

References 22 publications

Effects of discharge mode and gas composition for plasma‐hydrophilized titanium surface on hydrophilic sustainability

Effects of discharge mode and gas composition for plasma‐hydrophilized titanium surface on hydrophilic sustainability

Corrosion resistance and cytocompatibility of Ti-20Zr-10Nb-4Ta alloy surface modified by a focused fiber laser

Microbial Fuel Cell Membrane Bioreactor in Wastewater Treatment, Electricity Generation and Fouling Mitigation

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