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核技术  2014 

RGO/FeOOH凝胶制备及其对铀的吸附性

DOI: 10.11889/j.0253-3219.2014.hjs.37.090302, PP. 90302-90302

Keywords: 三维还原氧化石墨烯-羟基氧化铁,,吸附容量,离子选择性

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Abstract:

三维(3D)石墨烯复合纳米材料由于具有极佳的物理化学特性而被广泛研究。本文利用Fe(II)离子还原自组装制备3D还原氧化石墨烯与羟基氧化铁(RGO/FeOOH)复合材料,并将材料应用于铀的吸附研究。结果表明,复合材料吸附容量对pH具有很强的依赖性,且当pH为5.5时吸附容量可达115mg?g?1;在溶液中加入NaClO4并未影响材料的吸附性;研究材料吸附铀(VI)的等温线,发现材料的吸附动力学符合双Langmuir模型曲线;通过离子选择性研究发现RGO/FeOOH复合材料对铀和铅具有较好的选择性。因此,可将此材料用于放射性废水中重金属离子的去除。

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