Simple rapid stabilization method through citric acid modification for magnetite nanoparticles

Dheyab, Mohammed Ali; Aziz, Azlan Abdul; Jameel, Mahmood S.; Noqta, Osama Abu; Khaniabadi, Pegah Moradi; Mehrdel, Baharak

doi:10.1038/s41598-020-67869-8

Cited by 159 publications

(82 citation statements)

References 34 publications

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“…This is in agreement with recent works that propose a conjugation of GSH capped iron oxide NPs by the free thiol group [58]. Several authors propose the iron oxide functionalization by carboxylic groups [59]. However, the relatively high negative Z-potential values obtained for Mag-GSH in all the studied pH range together with our cysteamine-iron oxide results led us to propose the linkage by the amine group for Mag-GSH.…”

Section: Discussionsupporting

confidence: 92%

Superficial Characteristics and Functionalization Effectiveness of Non-Toxic Glutathione-Capped Magnetic, Fluorescent, Metallic and Hybrid Nanoparticles for Biomedical Applications

Fernández-Ponce

Manuel

Fernández-Cisnal

et al. 2021

Metals

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An optimal design of nanoparticles suitable for biomedical applications requires proper functionalization, a key step in the synthesis of such nanoparticles, not only for subsequent crosslinking to biological targets and to avoid cytotoxicity, but also to endow these materials with colloidal stability. In this sense, a reliable characterization of the effectiveness of the functionalization process would, therefore, be crucial for subsequent bioconjugations. In this work, we have analyzed glutathione as a means to functionalize four of the most widely used nanoparticles in biomedicine, one of which is a hybrid gold-magnetic-iron-oxide nanoparticle synthetized by a simple and novel method that we propose in this article. We have analyzed the colloidal characteristics that the glutathione capping provides to the different nanoparticles and, using information on the Z-potential, we have deduced the chemical group used by glutathione to link to the nanoparticle core. We have used electron microscopy for further structural and chemical characterization of the nanoparticles. Finally, we have evaluated nanoparticle cytotoxicity, studying cell viability after incubation with different concentrations of nanoparticles, showing their suitability for biomedical applications.

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Section: Discussionsupporting

confidence: 92%

Superficial Characteristics and Functionalization Effectiveness of Non-Toxic Glutathione-Capped Magnetic, Fluorescent, Metallic and Hybrid Nanoparticles for Biomedical Applications

Fernández-Ponce

Manuel

Fernández-Cisnal

et al. 2021

Metals

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show abstract

“…5). The saturation magnetization (emu/g) of NiFe2O4-Mod MMT nanocomposite was 74.54 emu/g confirming that this nanocomposite has a super paramagnetic behaviour [59] and its dispersed particles in water can be separated easily by an external magnetic field after adsorption equilibrium.…”

Section: Magnetic Properties(vsm)mentioning

confidence: 72%

Synthesis and Characterization of Magnetic Nickel Ferrite-Modified Montmorillonite Nanocomposite For Cu (II) and Zn (II) Ions Removal From Wastewater

2021

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For the adsorption of copper (II) and zinc (II) ions from polluted water, an efficient inexpensive nanoadsorbent; nickel ferritemodified montmorillonite nanocomposite was synthesized by co-precipitation of the mechano-chemically modified montmorillonite with the salts of nickel and iron. The natural MMT, modified MMT, and the synthesized nickel ferritemodified montmorillonite (NiFe2O4-Mod MMT) nanoadsorbent were characterized by several techniques including Fourier transform infrared spectroscopy, X-ray diffraction, transmission electron microscopy, energy-dispersive X-ray, surface area analysis, saturation magnetization, and surface zeta potential. Batch studies were carried out on the effect of various parameters including contact time, nanocomposite dosage, solution pH, metal ion initial concentration, and temperature on the adsorption process to optimize its conditions. The equilibrium state was reached after 60 min and 90 min of reaction for Cu (II) and Zn (II) ions, respectively. The optimum conditions were 0.1 g adsorbent dose, pH 5, 13 mg/L initial metal ion concentration and 298 K temperature for copper (II) adsorption and 0.1 g adsorbent dose, pH 6, 6 mg/L initial metal ion concentration, and 298 K temperature for zinc (II) adsorption. Among the designed kinetic and equilibrium models, the pseudo-second-order kinetic model and Langmuir adsorption isotherm model have controlled the adsorption process for both metal ions. Furthermore, the adsorption mechanism and the reproducibility of the nanoadsorbent were investigated. The maximum adsorption efficiency was 99.23% and 91.67% of copper (II) and zinc (II) ions, respectively.

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“…Therefore, both organic modifiers changed the structure and morphology of nanoparticles and functionalize their surface. Probably negatively charged molecules interacted with iron ions and could not be removed even when washing samples [ 28 ]. The narrow range of wavenumbers (right panel in Figure 1 b) showed the two characteristic vibrations of Fe–O bonds (marked as υ 1 and υ 2 ).…”

Section: Resultsmentioning

confidence: 99%

Influence of Magnetite Nanoparticles Shape and Spontaneous Surface Oxidation on the Electron Transport Mechanism

et al. 2021

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The spontaneous oxidation of a magnetite surface and shape design are major aspects of synthesizing various nanostructures with unique magnetic and electrical properties, catalytic activity, and biocompatibility. In this article, the roles of different organic modifiers on the shape and formation of an oxidized layer composed of maghemite were discussed and described in the context of magnetic and electrical properties. It was confirmed that Fe3O4 nanoparticles synthesized in the presence of triphenylphosphine could be characterized by cuboidal shape, a relatively low average particle size (9.6 ± 2.0 nm), and high saturation magnetization equal to 55.2 emu/g. Furthermore, it has been confirmed that low-frequency conductivity and dielectric properties are related to surface disordering and oxidation. The electric energy storage possibility increased for nanoparticles with a disordered and oxidized surface, whereas the dielectric losses in these particles were strongly related to their size. The cuboidal magnetite nanoparticles synthesized in the presence of triphenylphosphine had an ultrahigh electrical conductivity (1.02 × 10−4 S/cm at 10 Hz) in comparison to the spherical ones. At higher temperatures, the maghemite content altered the behavior of electrons. The electrical conductivity can be described by correlated barrier hopping or overlapping large polaron tunneling. Interestingly, the activation energies of electrons transport by the surface were similar for all the analyzed nanoparticles in low- and high-temperature ranges.

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Simple rapid stabilization method through citric acid modification for magnetite nanoparticles

Cited by 159 publications

References 34 publications

Superficial Characteristics and Functionalization Effectiveness of Non-Toxic Glutathione-Capped Magnetic, Fluorescent, Metallic and Hybrid Nanoparticles for Biomedical Applications

Superficial Characteristics and Functionalization Effectiveness of Non-Toxic Glutathione-Capped Magnetic, Fluorescent, Metallic and Hybrid Nanoparticles for Biomedical Applications

Synthesis and Characterization of Magnetic Nickel Ferrite-Modified Montmorillonite Nanocomposite For Cu (II) and Zn (II) Ions Removal From Wastewater

Influence of Magnetite Nanoparticles Shape and Spontaneous Surface Oxidation on the Electron Transport Mechanism

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