Electrophoretic deposition of selenium

Aksakal, Bünyamin; Boccaccını, Aldo R.

doi:10.1016/j.matlet.2012.02.059

Cited by 27 publications

(9 citation statements)

References 13 publications

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“…13 The effects of some additives such as Ag, Sr, Zr, SiO 2 , Se, and bioglass on the mechanostructure, corrosion, and antibacterial activity of HA were investigated for such purposes, and studies on this subject are still ongoing for different methods and purposes. [14][15][16][17][18][19] Thanks to its strong antibacterial properties and nontoxic properties, silver ions have been reported to significantly increase the antibacterial property. For example, it was revealed that silver nanoparticles at a concentration of 10 and 50 μg/cm 3 inhibited a bacterial growth of 62% and 88%, respectively, whereas a concentration of 100 μg/cm 3 caused 100% inhibition of bacterial growth.…”

Section: Introductionmentioning

confidence: 99%

“…However, the unwanted rapid dissolution rates of HA and some insufficient antibacterial activities limit the use of HA alone as a coating material 13 . The effects of some additives such as Ag, Sr, Zr, SiO 2 , Se, and bioglass on the mechanostructure, corrosion, and antibacterial activity of HA were investigated for such purposes, and studies on this subject are still ongoing for different methods and purposes 14–19 . Thanks to its strong antibacterial properties and nontoxic properties, silver ions have been reported to significantly increase the antibacterial property.…”

Section: Introductionmentioning

confidence: 99%

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Silver/selenium/chitosan co‐substituted bioceramic coatings of Ni–Ti alloy: Antibacterial efficiency and cell viability

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Aksakal

Sinirlioglu

2022

Int J Applied Ceramic Tech

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The effects of silver (Ag), selenium (Se), and chitosan (Cht) additives on the antibacterial activity and cell viability of NiTi were investigated. Three different hydroxyapatite (HA)‐based bioceramic coatings to improve the antibacterial activity and cell viability of NiTi; HA, HA/Ag, and HA/Se–Cht were applied to NiTi substrates by a sol–gel method. The coated samples were characterized by scanning electron microscopy–electron‐dispersive spectroscopy and X‐ray diffraction and surface hardnesses were measured. The antimicrobial efficiency of the coatings and uncoated surfaces were tested against Escherichia coli‐JM 103 and Staphylococcus aureus‐ATCC29293. In vitro cell–material interactions using Saos‐2 osteoblast cells were characterized by a 3‐(4,5‐dimethylthiazol‐2‐yl)‐2,5‐diphenyltetrazolium bromide (mitochondrial activity test) assay for cell viability. A homogeneous, crack‐free, and porous surface morphology is achieved in coatings. It has been shown that the Se–Cht additives did not have a significant effect on the surface hardness of the HA coating, but the Ag additive increased the hardness. Through in vitro antibacterial activity and cell viability tests, it was shown that Ag additive to bioceramic coatings significantly increased (p < .05) antibacterial properties but caused a decrease in cell viability. However, although Se–Cht additives did not have a significant effect on antibacterial properties (p < .05), it was observed that they increased cell viability.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Silver/selenium/chitosan co‐substituted bioceramic coatings of Ni–Ti alloy: Antibacterial efficiency and cell viability

Say

Aksakal

Sinirlioglu

2022

Int J Applied Ceramic Tech

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“…10 As a result, many additives have been used with hydroxyapatite to improve its poor biomechanical properties, increase adhesion, corrosion resistance, and improve biocompatibility and antimicrobial properties. [11][12][13][14][15][16][17][18] Because of Boron's high strength, lightness, and thermal stability, Boron is becoming popular as a additive in polymer and ceramic-based composites. 19,20 Aside from its ability to form bioglass, boron is also widely used as doping in bioactive glasses due to its important role in biological functions.…”

Section: Introductionmentioning

confidence: 99%

Boron-incorporated biocomposite coatings on 316L and NiTi alloys: Enhanced structural, antibacterial activity, and cell viability performances

Aslan

Aksakal

Aksoy

2022

Proc Inst Mech Eng H

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Boron doped (5 %, 10%, and 15 wt.%) Hydroxyapatite (B-HA) biocomposites were syntesized and coated on 316L SS and NiTi (Ni-45Ti) metallic substrates by using the electrophoretic deposition process (EPD). The morphological and structural characterization of the coatings was executed using scanning electron microscopy (SEM) and X-ray diffraction devices (XRD). Antibacterial tests were conducted using Escherichia coli ( E. coli, JM103) and Staphylococcus aureus ( S. aureus, ATCC29293) microorganisms. The mitochondrial activity assay (MTT)-[3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] was used to examine cell viability and cytotoxicity in Saos-2 osteoblast cells. HA and boron peaks, as well as B-TCP and metallic components, were detected in XRD examinations. Porous morphologies were generated on the surface with boron doped B-HA coatings, as revealed by SEM views. Antibacterial activity studies revealed that both metallic coating groups, notably with boron doping, demonstrated antibacterial activity against gram-negative E. coli and gram-positive S. aureus. The antibacterial activity of the 316L group was shown to be better than that of the NiTi group in comparisonal testing. The syntesized boron-doped biocomposite coatings did not have any detrimental effects on living cells, according to cell viability studies. The cell viability rate was found to be greater in NiTi coatings than in 316 SS coatings, and the impact was amplified by the addition of boron.

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“…It plays an important role in the protein functions, induction of cancer cell apoptosis, proliferation and differentiation of bone cells to improve bone health. It also exhibits good antibacterial property . Thus, substitution of selenite in the HAP matrix is likely to improve biological functions.…”

Section: Introductionmentioning

confidence: 99%

“…It also exhibits good antibacterial property. [16][17][18][19][20] Thus, substitution of selenite in the HAP matrix is likely to improve biological functions. However, studies on selenite incorporated HAPs are rather limited.…”

Section: Introductionmentioning

confidence: 99%

Crystalline selenite substituted carbonated hydroxyapatite nanorods: Synthesis, characterization, evaluation of bioactivity and cytotoxicity

Rajendran

Ravichandran

Nellaiappan

2016

Int J Applied Ceramic Tech

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Synthesis of pure and selenite substituted hydroxyapatites (HAP and Se-HAP with 0.02-0.10Se) by sol-gel method and evaluation of their morphological features, nature of functional groups, phase purity, in vitro bioactivity and cytotoxicity are addressed. Spectral studies confirm the incorporation of selenite into the HAP lattice, accompanied by an increase in CO 3 2-content to maintain the charge imbalance following replacement of P 5+ with Se 4+, thus making the formation of selenite substituted carbonated HAP. Selenite substitution in the HAP lattice has led to a higher crystallinity and increased the crystallite size. The morphology of HAP is changed from sphere to rod-like structure upon substitution by selenite and the size of the rod is increased with an increase in the selenite content.Among the Se-HAP's, a better in vitro bioactivity and cell viability are observed for 0.02Se-HAP and 0.04Se-HAP while the trend is reversed when the extent of selenite substitution becomes higher. role in improving the biological activity of the apatites and, the eventual bone formation and regeneration. Selenium is a vital micro-nutrient and one of the most essential elements required for many biological metabolisms. It plays an important role in the protein functions, induction of cancer cell apoptosis, proliferation, and differentiation of bone cells to improve bone health. It also exhibits good antibacterial property. [16][17][18][19][20] Thus, substitution of selenite in the HAP matrix is likely to improve biological functions. However, studies on selenite incorporated HAPs are rather limited. The biological influence of selenium on human system is dose dependant and hence the use of selenium beyond the tolerance level could lead to selenosis and toxicity to cellular environment. [21][22][23] Hence, it is imperative to optimize the concentration of selenite in HAP. In earlier reports, selenite-substituted HAP (Se-HAP) was synthesized by precipitation method. 16,17,24,25 Nevertheless, this method led to a decrease in crystallinity of Se-HAP and promoted agglomeration of crystals even at lower concentrations of selenite. Crystalline HAP's are known to improve biomineralization process (the bone like apatite formation) and hence, they serve as exceptional biomaterials. Moreover, orthopedic implant applications warrant the use of highly crystalline apatites due to their stability during the early stages of resorption process and their ability to increase the longevity of the coating. 26Among the various methods available for the synthesis of HAP, 27-33 the sol-gel method has received much attention owing to its inherent advantages such as high product purity, improved crystallinity, homogenous molecular mixing and, its ability to synthesize HAP's at relatively low temperatures. 34,35 The sol-gel method, which has not been attempted previously for the synthesis of Se-HAP is an ideal choice to prepare high pure crystalline apatites. 36-38The present study aims to synthesize Se-HAP's with varying precursor selenite co...

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Electrophoretic deposition of selenium

Cited by 27 publications

References 13 publications

Silver/selenium/chitosan co‐substituted bioceramic coatings of Ni–Ti alloy: Antibacterial efficiency and cell viability

Silver/selenium/chitosan co‐substituted bioceramic coatings of Ni–Ti alloy: Antibacterial efficiency and cell viability

Boron-incorporated biocomposite coatings on 316L and NiTi alloys: Enhanced structural, antibacterial activity, and cell viability performances

Crystalline selenite substituted carbonated hydroxyapatite nanorods: Synthesis, characterization, evaluation of bioactivity and cytotoxicity

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