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Issue 23, 2008
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A facile route to synthesize magnetic particles within hollow mesoporous spheres and their performance as separable Hg2+ adsorbents

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Abstract

We present here a simple and effective strategy, called the vacuum nano-casting route (VNR), for fabricating hollow mesoporous spheres with magnetic cores. The loading amount of magnetic cores and saturation magnetization value can be easily tuned by changing the concentration of iron nitrate solution used in the synthesis procedure. After modification with 1,4-bis(triethoxysilyl)propane tetrasulfide (BTESPTS), the composite could be used as a highly selective absorbent of Hg2+, and was conveniently separated by an external magnetic field. The composites are characterized by X-ray diffraction, N2 sorption isotherms, transmission electron microscopy, energy-dispersive spectroscopy, vibrating-sample magnetometry, Fourier-transform infrared spectroscopy and inductively coupled plasma atomic emission spectroscopy.

Graphical abstract: A facile route to synthesize magnetic particles within hollow mesoporous spheres and their performance as separable Hg2+ adsorbents

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Publication details

The article was received on 19 Feb 2008, accepted on 26 Mar 2008 and first published on 14 Apr 2008


Article type: Paper
DOI: 10.1039/B802857E
J. Mater. Chem., 2008,18, 2733-2738

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    A facile route to synthesize magnetic particles within hollow mesoporous spheres and their performance as separable Hg2+ adsorbents

    L. Guo, J. Li, L. Zhang, J. Li, Y. Li, C. Yu, J. Shi, M. Ruan and J. Feng, J. Mater. Chem., 2008, 18, 2733
    DOI: 10.1039/B802857E

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