Journal
JOURNAL OF CHEMISTRY
Volume 2014, Issue -, Pages -Publisher
HINDAWI LTD
DOI: 10.1155/2014/546956
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Funding
- Zhejiang Provincial Natural Science Foundation of China [LY13B030002]
- Open Research Fund of Top Key Discipline of Chemistry in Zhejiang Provincial Colleges
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials (Zhejiang Normal University)
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Porous gamma-Fe2O3 nanoparticles were prepared via a solid-state conversion process of a mesoporous iron(III) carboxylate crystal, MIL-100(Fe). First, the MIL-100(Fe) crystal that served as the template of the metal oxide was synthesized by a low-temperature (<100 degrees C) synthesis route. Subsequently, the porous gamma-Fe2O3 nanoparticles were fabricated by facile thermolysis of the MIL-100(Fe) powders via a two-step calcination treatment. The obtained gamma-Fe2O3 was characterized by X-ray diffraction (XRD), N-2 adsorption, X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM) techniques, and then used as an adsorbent for heavy metal ions removal in water treatment. This study illustrates that the metal-organic frameworks may be suitable precursors for the fabrication of metal oxides nanomaterials with large specific surface area, and the prepared porous gamma-Fe2O3 exhibits a superior adsorption performance for As(V) and As(III) ions removal in water treatment.
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