Transformations of Titanium (IV) Butoxide on Magnetite Surface in the Presence of Pluronic P-123

Abstract

The technique of producing magnetically operated nanocomposites Fe3O4/TiO2 with high specific surface area (to 320 m2/g) was developed. A copolymer poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol) (Pluronic-123) was used as a template. The processes of converting n-butylortotytanatu (BOT) in TiO2 on the surface of magnetite in the presence of PL when heated, and the structure, magnetic and adsorption properties of nanocomposites Fe3O4/TiO2 were investigated. It is shown that the maximum temperature of the heat treatment of nanocomposites is 500 ºC. It was established that the specific saturation magnetization (σs) of nanocomposites Fe3O4/TiO2 by varying the content of PL ranges from 3.75 to 3.96 μT•m3/kg, while coercive force Hc – 1.47-1.61 kA/m. Adsorption complexes such as Fe3O4/TiO2/DNA were obtained.Keywords: magnetically operated nanocomposites, template, Pluronic, DNA, adsorption complex.