二维片层卟啉基共价有机框架材料修饰电极用于污水中汞离子的高灵敏检测

引用本文: 彭灿伟, 汪莉, 陈受惠. 二维片层卟啉基共价有机框架材料修饰电极用于污水中汞离子的高灵敏检测[J]. 分析化学, 2022, 50(3): 356-364. doi: 10.19756/j.issn.0253-3820.210582 shu

Citation: PENG Can-Wei, WANG Li, CHEN Shou-Hui. Two-dimensional Lamellar Porphyrin-based Covalent-Organic Framework Modified Electrode for Highly Sensitive Detection of Mercury Ions in Sewage[J]. Chinese Journal of Analytical Chemistry, 2022, 50(3): 356-364. doi: 10.19756/j.issn.0253-3820.210582 shu

二维片层卟啉基共价有机框架材料修饰电极用于污水中汞离子的高灵敏检测

江西师范大学化学化工学院, 南昌 330022

通讯作者: 陈受惠,E-mail:csh2k@jxnu.edu.cn

基金项目:
国家自然科学基金项目（Nos.21765009，21964010，21465014，21665012）和江西省教育厅研究生创新基金项目资助。

摘要: 基于5，10，15，20-四（4-氨基苯）卟啉（TAPP）和对苯二甲醛（TPAL）间的胺醛缩合反应，合成了一种卟啉基共价有机框架材料（TAPP-TPAL-COF）。此材料呈多孔二维片层状，具有四边形拓扑结构和平面共轭π键。TAPP-TPAL-COF上丰富的π键可与玻碳电极（GCE）表面发生π-π共轭作用，被稳定地固载于电极表面。材料的多孔结构有利于Hg²⁺的传输，并且卟啉环上的4个N原子可与Hg²⁺发生配位作用，使溶液中的Hg²⁺富集于电极表面，从而提高传感器的灵敏度。基于TAPP-TPAL-COF修饰GCE构建了一种Hg²⁺电化学传感器，线性范围为10.9 nmol/L~17.5 μmol/L，检出限为3.3 nmol/L，灵敏度为111.5 μA·L/（μmol·cm²），仅需250 s即可完成检测。构建的TAPP-TPAL-COF传感器具有稳定性好、灵敏度高、线性范围宽、检出限低、响应速度快的特点，为现场实时检测重金属离子提供了一种可选方案。

关键词:

English

Two-dimensional Lamellar Porphyrin-based Covalent-Organic Framework Modified Electrode for Highly Sensitive Detection of Mercury Ions in Sewage

College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China

Corresponding author: CHEN Shou-Hui, csh2k@jxnu.edu.cn

Received Date: 23 June 2021
Revised Date: 29 October 2021
Fund Project:
Supported by the National Natural Science Foundation of China (Nos.21765009, 21964010, 21465014, 21665012) and the Postgraduate Innovation Fund Project of Jiangxi Provincial Department of Education.

Abstract: A two-dimensional porphyrin-based covalent-organic framework (TAPP-TPAL-COF) was prepared by the amine-aldehyde condensation reaction of terephthalaldehyde (TPAL) and 5,10,15,20-tetrakis (4-aminobenzene) porphyrin (TAPP). TAPP-TPAL-COF was porous two-dimensional nanosheets with quadrilateral topological structure and planar conjugated π bonds. The material had π-π conjugate interaction with the glassy carbon electrode, making the material stably immobilized on the surface of the electrode. The porous structure of TAPP-TPAL-COF was conducive to the transmission of mercury ions (Hg²⁺), and the four N atoms in the porphyrin ring served as Hg²⁺ coordination sites to enrich Hg²⁺ in the solution on the electrode surface, improving the sensitivity of the sensor. An Hg²⁺ electrochemical sensor was thus constructed via TAPP-TPAL-COF. The linear range of the sensor was 10.9 nmol/L-17.5 μmol/L, the limit of detection was 3.3 nmol/L (S/N=3), and the sensitivity was 111.5 μA·L/(μmol·cm²). It took only 250 s to get the current response signals. The sensor presented good stability, high sensitivity, wide linear range, low detection limit and fast response, providing an optional solution for real-time detection of heavy metal ions in water samples.

Key words:

Mercury ion（Ⅱ）
/ Covalent-organic framework
/ Two-dimensional lamellar porphyrin
/ Electrochemical sensor
/ Differential pulse stripping voltammetry
/ Sewage analysis

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沈阳化工大学材料科学与工程学院沈阳 110142

二维片层卟啉基共价有机框架材料修饰电极用于污水中汞离子的高灵敏检测

通讯作者: 陈受惠,E-mail:csh2k@jxnu.edu.cn

English

Two-dimensional Lamellar Porphyrin-based Covalent-Organic Framework Modified Electrode for Highly Sensitive Detection of Mercury Ions in Sewage

Corresponding author: CHEN Shou-Hui, csh2k@jxnu.edu.cn

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

二维片层卟啉基共价有机框架材料修饰电极用于污水中汞离子的高灵敏检测

通讯作者: 陈受惠,E-mail:csh2k@jxnu.edu.cn

English

Two-dimensional Lamellar Porphyrin-based Covalent-Organic Framework Modified Electrode for Highly Sensitive Detection of Mercury Ions in Sewage

Corresponding author: CHEN Shou-Hui, csh2k@jxnu.edu.cn

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

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