Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 406, Issue -, Pages 35-41Publisher
ELSEVIER
DOI: 10.1016/j.jmmm.2015.12.085
Keywords
Magnetic carbon nanotubes; Mesoporous silica; Core-shell; Nanocable
Funding
- National Natural Science Foundation of China [21305086]
- Start-up Funding of Shanghai University of Engineering Science
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Magnetic mesoporous silica coated carbon nanotubes were produced from hydrophilic monodisperse magnetic nanoparticles decorated carbon nanotubes using well controlled programmed synthesis method and were characterized by TEM, XRD, FTIR, TGA, N-2 adsorption-desorption and VSM. The well-designed mesoporous magnetic nanotubes had a large specific area, a highly open mesoporous structure and high magnetization. Firstly, SiO2-coated maghemite/CNTs nanoparticles (CNTs/Fe3O4@SiO2 composites) were synthesized by the combination of high temperature decomposition process and an sol-gel method, in which the iron acetylacetonate as well as TEOS acted as the precursor for maghemite and SiO2, respectively. The CNTs/Fe304@SiO2 composites revealed a core-shell structure, Then, CNTs/Fe3O4@mSiO(2) was obtained by extracting cetyltrimethylammonium bromide (CTAB) via an ion exchange procedure. The resulting composites show not only a magnetic response to an externally applied magnetic field, but also can be a good adsorbent for the organic pollutant in the ambient temperature. (C) 2016 Elsevier B.V. All rights reserved.
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