Adsorption of cis-dichlorodiammineplatinum by nanostructures based on single-domain magnetite

Magnetosensitive nanocomposites on the basis of monodomain magnetite Fe₃O₄/meso-2,3-dimercaptosuccinic acid, Fe₃O₄/γ-aminopropyltriethoxysilane, Fe₃O₄/polyacrylamide, Fe₃O₄/hydroxyapatite were synthesized. Size distribution of magnetite nanoparticles in ensemble and their magnetic properties were studied. It has been shown that the magnetization curve of the liquid containing monodomain magnetite has a form that is characteristic for superparamagnetics, and its calculations in the framework of Langeven's paramagnetism theory match satisfactorily to the experimental results. The highest adsorption parameters were observed for magnetosensitive nanocomposites Fe₃O₄/polyacrylamide and Fe₃O₄/γ-aminopropyltriethoxysilane. Prospects of the studied nanostructures for medicobiological and technical applications as adsorbents of cis-dichlorodiammineplatinum were shown.