Synthesis and application of ion imprinting polymer coated magnetic multi-walled carbon nanotubes for selective adsorption of nickel ion
Synthesis and application of ion imprinting polymer coated magnetic multi-walled carbon nanotubes for selective adsorption of nickel ion
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DOI：
10.1016/j.apsusc.2017.09.123
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发表时间：
2018-01-15
影响因子：
6.7
通讯作者：
Sun, Xiaoran
中科院分区：
文献类型：
--
作者：
He, Junnan;Shang, Hongzhou;Sun, Xiaoran
以壳聚糖（CS）和丙烯酸为功能单体，Ni（II）为模板剂，N 'N-亚甲基双丙烯酰胺为交联剂，在反相乳液体系中合成了一种新型的基于多壁碳纳米管（MWCNTs）的镍离子印迹聚合物（IIPs）。采用扫描电镜（SEM）、热重分析（TG）、X射线衍射（XRD）、傅里叶变换红外光谱（FTIR）等手段对产物的化学结构和形貌进行了表征。研究表明，凝胶层可以很好地接枝到MWCNTs表面。用原子吸收分光光度法研究了IIPs对Ni（II）的吸附性能，结果表明，IIPs对Ni（II）具有良好的吸附和选择性，符合准二级动力学等温线，最大吸附容量为19.86 mg/g，选择因子分别为13.09和4.42。采用循环伏安法（CV）对离子印迹碳糊电极（CPE/IIPs）的电化学性能进行了表征。研究表明，CPE/IIPs具有优异的电化学性能。(C)2017由Elsevier B. V.出版
A novel nickel ion imprinted polymers (IIPs) based on multi-walled carbon nanotubes (MWCNTs) were synthesized inverse emulsion system, using chitosan(CS) and acrylic acid as the functional monomers, Ni (II) as the template, and N'N-methylene bis-acrylamide as the cross-linker. The chemical structure and morphological feature of the IIPs were characterized by scanning electron microscopy (SEM), Thermogravimetry (TG), X-ray diffraction (XRD), and Fourier transform infrared spectrometer (FTIR). The studies indicated that the gel layer was well grafted on the surface of MWCNTs. Studies on the adsorption ability of the IIPs, by atomic absorption spectrophotometry, demonstrated that IIPs possessed excellent adsorption and selective ability towards Ni (II), fitting to pseudo second-order kinetic isotherms and with a maximum capacity of 19.86 mg/g, and selectivity factor of 13.09 and 4.42. The electrochemical performance of ion imprinting carbon paste electrode (CPE/IIPs) was characterized by Cyclic voltammetry (CV). Studies have shown that CPE/IIPs showed excellent electrochemical performance. (C) 2017 Published by Elsevier B.V.