Mixture of silver and iron oxide nanoparticles produced by chemical methods

Nishida, Naoki; Amagasa, Shota; Kobayashi, Yoshio; Yamada, Yasuhiro

doi:10.1007/s10751-017-1445-3

Cited by 4 publications

(2 citation statements)

References 11 publications

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“…38 Ag compounds can affect the formation of nano-Fe hydroxides. 39 Fe hydroxides can adsorb Ag ions with varying adsorption capabilities. For instance, in a certain solution and under the same parameters (20 °C and pH = 6.77), Ag adsorption to γ-FeOOH is 10 times that to α-FeOOH.…”

Section: Resultsmentioning

confidence: 99%

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In Vitro Degradation, Hemocompatibility, and Cytocompatibility of Nanostructured Absorbable Fe–Mn–Ag Alloys for Biomedical Application

Bagha

Khakbiz

Sheibani

et al. 2020

ACS Biomater. Sci. Eng.

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The addition of noble elements such as Ag was shown as a successful method to accelerate the corrosion rate of absorbable Fe-based alloys. One major concern of Ag addition is its effect on hemocompatibility and biocompatibility. In this study, in vitro degradation and surface analysis of Fe-30Mn-xAg (x= 0, 1 and 3 wt.%) alloys as well as their effects on hemocompatibility and cell viability of human umbilical vein endothelial cells (HUVECs) were investigated. The static degradation rate of the alloys was 4.97, 4.69 and 4.49 mg/cm 2 for Fe-30Mn, Fe-30Mn-1Ag, and Fe-30Mn-3Ag, respectively. The surface analysis after degradation showed that γ-FeOOH was formed on Fe-30Mn-3Ag, while α-FeOOH was more dominant on Fe-30Mn and Fe-30Mn-1Ag. As γ-FeOOH is more soluble than α-FeOOH, it assists further degradation of Fe-30Mn-3Ag alloy. The high amount of Ag, induced hemolysis ratio however, inhibited coagulation by decreasing the platelet adhesion. Fe-30Mn-1Ag and Fe-30Mn-3Ag alloys shown improved cell viability compared to that of Fe-Mn alloy. Shear yield strength and shear elastic modulus of the samples after immersion tests were increased while the ultimate shear strength was not affected. Based on acceptable hemolysis rate, low platelet adhesion, acceptable cell viability, and appropriate mechanical properties after degradation Fe-30Mn-1Ag can be considered as a suitable blood-contacting Fe-based absorbable alloy.

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Section: Resultsmentioning

confidence: 99%

“…Then with an increase in Fe(II) ions, Fe3O4 was formed, whereas γ-FeOOH and α-FeOOH co-existed in the system, as well 38 . Ag compounds can affect the formation of nano-Fe hydroxides 39 . Fe hydroxides can adsorb Ag ions with varying adsorption capabilities.…”

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confidence: 99%