Synthesis and Properties of Magnetically Operated Nanocomposites Based on Transition Metals Oxides

Lyudmyla STOROZHUK, Sergey HUTORNOY, Ivan MUDRAK
2013 Medžiagotyra  
Technique for synthesis magnetically operated nanocomposites based on transition metals oxides (MeFe 2 O 4 , Me = Fe 2+ , Ni 2+ , Co 2+ ) with biologically compatible coating (SiO 2 ) x were developed and optimized. Tetraethoxysilane (TEOS) and sodium silicate were used as precursors for formation of SiO 2 onto surface of magnetic component. Content of SiO 2 in nanocomposite surface layer were adjusted from 0.1 g to 1.0 g for 1.0 g of magnetic component. Structure of the obtained nanocomposites
more » ... ined nanocomposites was studied using XRD method, electron microscopy and IR-Fourier spectroscopy. Influence of adsorbents composition on their magnetic properties was studied using vibration magnetometer. It was shown that values of specific magnetization at saturation for nanocomposites containing 0.2 g of non-magnetic component per 1 g of magnetic component corresponds to the typical values of pure magnetic phase. With increasing of content of non-magnetic components a decrease of specific magnetization at saturation was revealed.
doi:10.5755/j01.ms.19.1.3818 fatcat:qrlgzylxvrhghamzhj35n7fepi