Synthesis of mesoporous maghemite with high surface area and its adsorptive properties |
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| Institution: | 1. Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland;2. Department of Irrigation and Drainage Engineering, Faculty of Water Sciences Engineering, Shahid Chamran University of Ahvaz, Khuzestan, Iran;3. Department of Chemistry, College of Science, Bld#5, King Saud University, Riyadh, Saudi Arabia |
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| Abstract: | Mesoporous maghemite (γ-Fe2O3) with high surface area was prepared by the thermal decomposition of Fe–urea complex (Fe(CON2H4)6](NO3)3) with the aid of cetyltrimethyl ammonium bromide (CTAB), and its adsorption ability for the removal of fluoride was investigated. X-ray diffraction (XRD), nitrogen adsorption–desorption measurements, transmission electron micrograph (TEM) observations, and magnetic measurements show that the γ-Fe2O3 has a mesoporous structure and its crystallite size, specific surface area, and magnetic properties can be controlled by varying the content of CTAB in Fe(CON2H4)6](NO3)3. The maximum adsorption capacity of the mesoporous γ-Fe2O3 for fluoride is estimated to be 7.9 mg/g, which suggests that the mesoporous γ-Fe2O3 is an excellent adsorbent for fluoride. |
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