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Preparation of carbon coated Fe304 nanoparticles and their application in the removal of Rhodamine B in aqueous media
Author(s): 
Pages: 1669-1675
Year: Issue:  11
Journal: Environmental Chemistry

Keyword:  Fe304 nanoparticleactivated carbonRhodamine Badsorption.;
Abstract: 采用溶剂热-水热法合成了碳覆盖的Fe3O4纳米粒子Fe3O4/C,利用扫描电镜(SEM)与红外光谱(FT-IR)对其进行了表征,并研究了其对水中罗丹明B的吸附性能.系统考察了吸附动力学、吸附等温线、吸附剂用量对吸附性能的影响.Fe3O4/C对罗丹明B的吸附在3 h内即可达到平衡,最大吸附量可达13.23 mg.g-1.分别用Langmuir和Freundlich吸附模型解释了Fe3O4/C对罗丹明B的作用机理,吸附反应过程符合准二级动力学方程.结果表明,该吸附剂具有良好的磁效应和吸附性能,可快速去除罗丹明B,去除率高达90%以上;吸附剂可重复利用,成本低,具有环境友好的优势.
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