Preparation of Fe3O4@C@Layered Double Hydroxide Composite for Magnetic Separation of Uranium

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• 作者：Xiaofei Zhang ; Jun Wang ; Rumin Li ; Qihui Dai ; Rui Gao ; Qi Liu ; Milin Zhang
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2013
• 出版时间：July 31, 2013
• 年：2013
• 卷：52
• 期：30
• 页码：10152-10159
• 全文大小：422K
• 年卷期：v.52,no.30(July 31, 2013)
• ISSN：1520-5045

文摘

A three-component composite, Fe₃O₄@C@layered double hydroxide (Fe₃O₄@C@Ni鈥揂l LDH), was prepared through a two-step layer-by-layer route. The carbon-coated Fe₃O₄ nanoparticles (Fe₃O₄@C) were first synthesized by a hydrothermal reaction, and then Ni鈥揂l LDH nanosheets were anchored onto Fe₃O₄@C via an in situ growth method. The as-obtained Fe₃O₄@C@Ni鈥揂l LDH magnetic composite was applied as magnetic adsorbent for the extraction of uranium(VI) ions from aqueous solutions. The maximum adsorption capacity of the composite for uranium(VI) ion was 174.1 卤 0.2 mg g^鈥?, showing a high efficiency for the removal of uranium(VI) from aqueous solution. In addition, the composite can be easily separated from the solution by a magnet after the adsorption process. The results indicate that Fe₃O₄@C@Ni鈥揂l LDH composite can be used as a potential adsorbent for sorption uranium(VI) and also provide a simple, fast separation method for removal of uranium(VI) ions from aqueous solution.