Synthesis, characterization and application of a novel ion-imprinted polymer based voltammetric sensor for selective extraction and trace determination of cobalt (II) ions
Synthesis, characterization and application of a novel ion-imprinted polymer based voltammetric sensor for selective extraction and trace determination of cobalt (II) ions
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DOI：
10.1016/j.snb.2016.11.094
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发表时间：
2017-05
影响因子：
8.4
通讯作者：
M. Torkashvand;M. Gholivand;R. Azizi
中科院分区：
文献类型：
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作者：
M. Torkashvand;M. Gholivand;R. Azizi
构建了一种基于离子印迹聚合物（IIP）纳米微球的新型钴离子选择性传感器，并将其应用于钴离子的差分脉冲阴极溶出伏安法测定。以丙烯酰胺（AAM）为功能单体，N，N-亚甲基双丙烯酰胺（NNMBA）为交联剂，过硫酸铵（APS）为引发剂，在玻碳电极表面，将Co2+− 8-羟基喹啉与磁性纳米粒子连接，聚合成IIP纳米珠。通过比较IIP/MNPs-oxine/GCE与非印迹聚合物（NIP/MNPs-oxine/GCE）对模板的响应，证明了印迹聚合物中Co（II）的去除和用于容纳Co（II）的空腔的形成。考察了各种因素对电极响应行为的影响，并进行了优化。该传感器的线性范围为0.5 ~ 20和20 ~ 500 nM，检测限为0.1 nM（S/N = 3）。该传感器成功地应用于不同真实的样品中低含量钴的测定。
A novel Co2+selective sensor based on the ionic imprinted polymer (IIP) nanobeads was constructed and applied for differential pulse cathodic stripping voltammetric determination of cobalt ions. The IIP nanobeads was fabricated by polymerization of acryl amide (AAM) as functional monomer, N,N methylenebisacryl amide (NNMBA) as cross linker and ammonium persulphate (APS) as initiator, around the complex of Co2+− 8-hydroxyquniline linked to the casted magnetic nanoparticles at the surface of glassy carbon electrode. Removal of the Co (II) from the imprinted polymer and creation of cavities for hosting Co (II) was proved by comparison of the response of IIP/MNPs-oxine/GCE to template with that of non-imprinted polymer (NIP/MNPs-oxine/GCE). The effect of various factors on the response behavior of the electrode were investigated and optimized. The introduced sensor showed two linear ranges of 0.5 to 20 and 20 to 500 nM with detection limit of 0.1 nM (S/N = 3). The sensor was successfully applied for low level determination of cobalt in different real samples.