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L. S. SEMKO, L. P. STOROZHUK, P. P. GORBIK, M. V. ABRAMOV, and O. I. ORANS’KA
«Synthesis and Properties of Magnetite/Silicon Dioxide Magnetosensitive Nanocomposites with the Goal to Produce Immunosorbents»
101–111 (2010)

PACS numbers: 61.05.cp, 75.50.Tt, 75.75.Cd, 78.67.Sc, 81.16.-c, 82.37.Rs, 87.64.Cc

The technique for obtaining of the magnetite-based nanocomposites modified by silica is worked out. Sodium silicate is used as a modifying agent. The structure of obtained composites is investigated by methods of X-ray analysis and IR–Fourier spectroscopy. The magnetic properties of these nanocomposites are investigated with the use of a vibration magnetometer. Using the Fe3O4/SiO2 nanocomposites as a base, models of immunoadsorbents containing immobilized human immunoglobulin are prepared. Physical adsorption of normal human immunoglobulin on the synthesized Fe3O4/SiO2 nanocomposites is studied with spectrophotometric method.