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Exploring a novel, sensitive, and efficient Pb2+electrochemical sensing strategy based on Cu-MOF

文献类型： 外文期刊

作者： Yao, Chunxia 1 ; Wang, Hongmei 1 ; Zhou, Jiaxin 1 ; Song, Wei 1 ; Rao, Qinxiong 1 ; Gao, Zhaoliang 5 ; Liu, Chengbin 1 ; Song, Weiguo 1 ; Liang, Ying 6 ;

作者机构： 1.Shanghai Acad Agr Sci, Inst Agrifood Stand & Testing Technol, Shanghai 201403, Peoples R China

2.Minist Agr & Rural Affairs, Coconstruct Minist & Prov, Key Lab Food Qual Safety & Nutr, Shanghai 201403, Peoples R China

3.Shanghai Ctr Agriprod Qual & Safety, Shanghai 201403, Peoples R China

4.Dazhou Res Acad Ecol & Environm Sci, Dazhou 635000, Sichuan, Peoples R China

5.Shanghai Acad Agr Sci, Inst Fruit & Forest, Shanghai 201403, Peoples R China

6.Shanghai Univ Med & Hlth Sci, Sch Pharm, Shanghai 201318, Peoples R China

关键词： MOFs; Electrochemical sensor; Environmental analysis; Heavy metals; Lead; Dissolution voltammetry

期刊名称：ARABIAN JOURNAL OF CHEMISTRY （ 影响因子：6.0； 五年影响因子：5.9 ）

ISSN： 1878-5352

年卷期： 2024 年 17 卷 2 期

页码：

收录情况： SCI

摘要： Lead (Pb) pollution is a wide and severe public health issue, and developing efficient detection method for lead ion (Pb2+) is of crucial importance. Herein, a 2,5-dimercapto-1,3,4-thiadiazole (DMTZ)-functionalized hydroxycopper salt metal organic framework (MOF) material (named as DMP-Cu) was prepared through an in-situ selftemplating method and used to develop an electrochemical sensor for the detection of Pb2+. The successful synthesis of the composite DMP-Cu was confirmed by X-ray diffraction, scanning electron microscopy, and X-ray energy spectroscopy. After optimization of the detection conditions, the DMP-Cu-50 modified glassy carbon electrode (DMP-Cu-50/GCE) shows good sensing performance to Pb2+ in aqueous solutions via square wave anodic dissolution voltammetry. The modified electrode exhibited good conductivity and the oxidation current showed a linear relationship to Pb2+ in the ranges of 1 x 10-11 - 4 x 10-10 mol & sdot;L-1 and 8 x 10-10 - 5 x 10-8 mol & sdot;L-1 with a detection limit of 0.003 nmol & sdot;L-1. In addition, the proposed sensing platforms have good reproducibility, stability, and anti-interference properties. With further analysis of real samples, the proposed sensors exhibit satisfactory performance in detecting Pb2+ in multiple actual water samples, including tap water and pond water. Therefore, the novel sensor can be a powerful analytical strategy for Pb2+ and has high potential to aid the effective monitoring and risk assessment of Pb2+ in the environment.

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