新型磁性纳米材料对低浓度铜离子选择性检测与去除

发布时间：2018-07-17 00:32

【摘要】：本文介绍一种新型有机荧光探针与选择性螯合剂修饰的核壳结构磁性纳米材料(SDMNA),该材料能够同时检测与去除水体中低浓度铜离子。通过一系列吸附实验,发现SDMNA对低浓度铜离子的检测与去除具有一定的选择性和较大的吸附量。吸附等温线与吸附动力学被用于研究SDMNA的吸附行为。结果表明,Freundlich吸附模型和准二级动力学方程分别能够较好地拟合吸附等温线与吸附动力学曲线。此外,结果还显示了SDMNA能在20min内便可达到吸附平衡。
[Abstract]:A novel core-shell magnetic nanomaterial (SDMNA) modified by organic fluorescence probe and selective chelating agent is introduced in this paper. This material can simultaneously detect and remove low concentration copper ions in water. Through a series of adsorption experiments, it is found that SDMNA has a certain selectivity and a large amount of adsorption for the detection and removal of low concentration copper ions. Adsorption isotherms and adsorption kinetics are used to study the adsorption behavior of SDMNA. The results show that Freundlich adsorption model and quasi-second-order kinetic equation can fit the adsorption isotherm and adsorption kinetic curve respectively. The results also show that SDMNA can reach adsorption equilibrium in 20min.
【作者单位】：江苏省环境应急与事故调查中心;中海石油环保服务(天津)有限公司;苏州海立蓝环保科技有限公司;
【分类号】：X52;TB383.1

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