Synthesis, Structural Features, Cytotoxicity, and Magnetic Properties of Colloidal Ferrite Spinel Co1–xNixFe2O4 (0.1 ≤ x ≤ 0.9) Nanoparticles
作者： Robert Pązik , Aleksander Zięcina , Emilia Zachanowicz , Malgorzata Małecka , Blazej Poźniak
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摘要: Colloidal ferrite spinel nanoparticles (CoxNi1–xFe2O4) were prepared by a microwave-stimulated Bradley technique under nonhydrolytic conditions. The effect of Ni2+ doping on the structural properties was studied powder XRD. particle size, hydrodynamic and morphology evaluated transmission electron microscopy (TEM) dynamic light scattering (DLS), which showed mean crystallite sizes ca. 10 60 nm for colloidal suspensions CoxNi1–xFe2O4, respectively. cytotoxicity tested against murine macrophages J774.E, osteosarcoma D17 cells, human red blood cells (RBCs). adsorption bovine serum albumin (BSA) studied, BSA high affinity surface nanoparticles. CoxNi1–xFe2O4 in suspension dose-dependent all cell lines, less harmful effects observed RBCs at concentrations up to 0.1 mg/mL. towards J774.E suggests that internalization living seems be key step elicit toxic response. Thus, particles investigation cell-type-dependent not uniform. colloids exhibited superparamagnetic behavior with blocking temperatures (TB) below 300 K. magnetic characteristics are well preserved form similar those powdered ferrites.
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