Synthesis of Hybrid Fe₃O₄–Silica–M(Zn, Cu, Ni) Submicrospheres and its Application for Adsorption on Bovine Hemoglobin

Abstract:

Magnetic metal silica submicrospheres were produced from silica coated on magnetic nanoparticles using well controlled hydrothermalled method and were characterized by TEM, XRD, FTIR, XPS. The well-designed mesoporous magnetic metal silciate had a large specific area, high magnetization. Firstly, SiO₂-coated maghemite (Fe₃O₄@SiO₂ composites) were synthesized by an sol-gel method, in which the iron ferrous chloride as well as TEOS acted as the precursor for maghemite and SiO₂, respectively. The Fe₃O₄@SiO₂ composites revealed a core-shell structure, Then, Fe₃O₄@SiO₂/X₃Si₂O₅(OH)₄(X = Ni, Cu, Zn) was obtained by hydrothermalled with metal chloride. The resulting composites show not only a magnetic response to an externally applied magnetic field, but also can be a good adsorbent for bovine hemoglobin in the ambient temperature.

• Periodical: Advanced Materials Research (Volumes 1120-1121)
• Pages: 903-908
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1120-1121.903
• Online since: July 2015
• Authors: Yue Tong, Min Zhang*, Ya Ru Nie, Jun Jun Linghu, Jun Qing Yu, Jing Li Xu

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