Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 695, Issue -, Pages 3256-3266Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.11.239
Keywords
Sea urchin; Copper silicate; Magnetite; Hemoglobin
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Funding
- National Science Foundation of China [21305086]
- Natural Science Foundation of Shanghai City [13ZR141830]
- Research Innovation Program of Shanghai Municipal Education Commission [14YZ138]
- Special Scientific Foundation for Outstanding Young Teachers in Shanghai Higher Education Institutions [ZZGJD13016, ZZGJD13018]
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Well-defined superparamagnetic Fe3O4/Metal-Silicate(Cu2+, Ni2+, Mg2+) hollow spheres were fabricated using magnetite nanoparticles/silicon dioxide(denoted as SiO2@Fe3O4) as templates. Firstly, mono-disperse SiO2 spheres were obtained by classical stober method, and SiO2@Fe3O4 nanocomposites were fabricated in one-pot procedure through a solvothermal method, which were then converted into Fe3O4/Metal-Silicate with hollow nanostructure by hydrothermal reaction between the silica core and metal ions in alkaline solution. The resultant Fe3O4/Metal-Silicate composites exhibit both hollow structures and superparamagnetism. Furthermore, batch adsorption shows that the sea urchin-like Fe3O4/CuSilicate hollow spheres exhibited large specific surface area and an excellent adsorption capacity on bovine hemoglobin(BHb). The resulting composites show not only a magnetic response to an externally applied magnetic field, but also can be a good adsorbent for removing the high abundant proteins(human hemoglobin(HHb)) in human blood. (C) 2016 Elsevier B.V. All rights reserved.
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