Determination of cesium ions in environmental water samples with a magnetic multi-walled carbon nanotube imprinted potentiometric sensor.
Determination of cesium ions in environmental water samples with a magnetic multi-walled carbon nanotube imprinted potentiometric sensor.
复制标题
磁性多壁碳纳米管印迹电位传感器测定环境水样中的铯离子
DOI：
10.1039/d0ra09659h
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发表时间：
2021-03-05
期刊：
影响因子：
3.9
通讯作者：
Sun C
中科院分区：
文献类型：
--
作者：
Wang Z;Wang L;Zhou C;Sun C
提出了一种基于磁性多壁碳纳米管/铯离子印迹聚合物复合材料(MMWCNTs@Cs-IIP)修饰的玻碳电极(GCE)的电位型传感器，用于铯(I)的检测。以铯离子为模板离子，壳聚糖为功能单体，戊二醛为交联剂合成了离子交换膜。以MMWCNTs@Cs(I)-IIP为改性剂，聚氯乙烯为中性载体，2-硝基苯基苯基醚为增塑剂，四苯基硼酸钠为亲油性盐，制备了涂覆在GCE表面的膜。该传感器在工作浓度范围为1×10−7~1×10−4M(摩尔L−−1)时，能斯特斜率为0.05954 V，检出限为4×10−8M。该传感器对铯离子具有较高的选择性，已成功应用于实际样品中Cs(I)的测定。
A potentiometric sensor, based on the glassy carbon electrode (GCE) modified with a magnetic multi-walled carbon nanotubes/cesium ion-imprinted polymer composite (MMWCNTs@Cs-IIP), is introduced for the detection of cesium(i). The IIP was synthesized using cesium ions as the template ions, chitosan as the functional monomer and glutaraldehyde as the cross-linking agent. The membrane, which was coated on the surface of the GCE, was prepared using MMWCNTs@Cs(i)-IIP as the modifier, PVC as the neutral carrier, 2-nitrophenyloctyl ether as the plasticizer and sodium tetraphenylborate as the lipophilic salt. The proposed sensor exhibited a Nernstian slope of 0.05954 V dec−1 in a working concentration range of 1 × 10−7 to 1 × 10−4 M (mol L−1) with a detection limit of 4 × 10−8 M. The sensor exhibited high selectivity for cesium ions and was successfully applied for the determination of Cs(i) in real samples.
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影响因子：
6.7
作者：
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通讯作者：
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影响因子：
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