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一种基于交联剂的聚离子液体用于4-壬基酚的灵敏电化学检测。

A Cross-Linker-Based Poly(Ionic Liquid) for Sensitive Electrochemical Detection of 4-Nonylphenol.

作者信息

Hu Jian, Dai Hao, Zeng Yanbo, Yang Yiwen, Wang Hailong, Zhu Xudong, Li Lei, Zhou Guobao, Chen Ruoyu, Guo Longhua

机构信息

School of Petrochemical Engineering, Changzhou University, Changzhou 213016, China.

College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, China.

出版信息

Nanomaterials (Basel). 2019 Apr 2;9(4):513. doi: 10.3390/nano9040513.

DOI:10.3390/nano9040513
PMID:30986975
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6523804/
Abstract

In this study, we report a cross-linker-based poly(ionic liquid) (PIL) for the sensitive detection of 4-nonylphenol (4-NP). PIL was poly(1,4-butanediyl-3,3'-bis-l-vinylimidazolium dibromide) (poly([V₂C₄(mim)₂]Br₂)). Poly([V₂C₄(mim)₂]Br₂) was prepared via one-step free-radical polymerization. The poly([V₂C₄(mim)₂]Br₂) was characterized by infrared spectroscopy, Raman spectroscopy, thermal gravimetric analyzer and scanning electron microscope. The poly([V₂C₄(mim)₂]Br₂) was then drop-cast onto a glassy carbon electrode (GCE) to obtain poly([V₂C₄(mim)₂]Br₂)/GCE. In comparison with a bare GCE, poly([V₂C₄(mim)₂]Br₂)/GCE exhibited higher peak current responses for [Fe(CN)₆], lower charge transfer resistance, and larger effective surface area. While comparing the peak current responses, we found the peak current response for 4-NP using poly([V₂C₄(mim)₂]Br₂)/GCE to be 3.6 times higher than a traditional cross-linker ethylene glycol dimethacrylate (EGDMA) based poly(EGDMA) modified GCE. The peak current of poly([V₂C₄(mim)₂]Br₂) sensor was linear to 4-NP concentration from 0.05 to 5 μM. The detection limit of 4-NP was obtained as 0.01 μM (S/N = 3). The new PIL based electrochemical sensor also exhibited excellent selectivity, stability, and reusability. Furthermore, the poly([V₂C₄(mim)₂]Br₂)/GCE demonstrated good 4-NP detection in environmental water samples.

摘要

在本研究中，我们报道了一种基于交联剂的聚离子液体（PIL）用于灵敏检测4-壬基酚（4-NP）。PIL为聚（1,4-丁二醇-3,3'-双-1-乙烯基咪唑鎓二溴化物）（聚（[V₂C₄(mim)₂]Br₂））。聚（[V₂C₄(mim)₂]Br₂）通过一步自由基聚合制备。聚（[V₂C₄(mim)₂]Br₂）通过红外光谱、拉曼光谱、热重分析仪和扫描电子显微镜进行表征。然后将聚（[V₂C₄(mim)₂]Br₂）滴铸到玻碳电极（GCE）上以获得聚（[V₂C₄(mim)₂]Br₂）/GCE。与裸GCE相比，聚（[V₂C₄(mim)₂]Br₂）/GCE对[Fe(CN)₆]表现出更高的峰值电流响应、更低的电荷转移电阻和更大的有效表面积。在比较峰值电流响应时，我们发现使用聚（[V₂C₄(mim)₂]Br₂）/GCE对4-NP的峰值电流响应比基于传统交联剂乙二醇二甲基丙烯酸酯（EGDMA）的聚（EGDMA）修饰GCE高3.6倍。聚（[V₂C₄(mim)₂]Br₂）传感器的峰值电流与4-NP浓度在0.05至5μM范围内呈线性关系。4-NP的检测限为0.01μM（S/N = 3）。新型基于PIL的电化学传感器还表现出优异的选择性、稳定性和可重复使用性。此外，聚（[V₂C₄(mim)₂]Br₂）/GCE在环境水样中对4-NP表现出良好的检测效果。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0d94/6523804/1d5439672448/nanomaterials-09-00513-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0d94/6523804/b9a89d0904eb/nanomaterials-09-00513-sch001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0d94/6523804/1bf5a6ed17ce/nanomaterials-09-00513-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0d94/6523804/b1d181042555/nanomaterials-09-00513-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0d94/6523804/dd0893ea38b9/nanomaterials-09-00513-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0d94/6523804/1b96c4cf3e9d/nanomaterials-09-00513-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0d94/6523804/c558f496a392/nanomaterials-09-00513-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0d94/6523804/83d233746d55/nanomaterials-09-00513-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0d94/6523804/1d5439672448/nanomaterials-09-00513-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0d94/6523804/b9a89d0904eb/nanomaterials-09-00513-sch001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0d94/6523804/1bf5a6ed17ce/nanomaterials-09-00513-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0d94/6523804/b1d181042555/nanomaterials-09-00513-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0d94/6523804/dd0893ea38b9/nanomaterials-09-00513-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0d94/6523804/1b96c4cf3e9d/nanomaterials-09-00513-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0d94/6523804/c558f496a392/nanomaterials-09-00513-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0d94/6523804/83d233746d55/nanomaterials-09-00513-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0d94/6523804/1d5439672448/nanomaterials-09-00513-g007.jpg

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