Paper-Based Fluorescent Sensor for Rapid Multi-Channel Detection of Tetracycline Based on Graphene Quantum Dots Coated with Molecularly Imprinted Polymer

文献类型： 外文期刊

第一作者： Wang, Linzhe

作者： Wang, Linzhe;Hu, Jingfang;Song, Yu;Li, Yansheng;Gao, Guowei;Wang, Linzhe;Wei, Wensong;Zhang, Chunhui;Wang, Linzhe;Hu, Jingfang;Song, Yu;Li, Yansheng;Gao, Guowei;Hu, Jingfang;Song, Yu;Wei, Wensong;Zhang, Chunhui;Fu, Fangting

作者机构：

关键词： graphene quantum dots; molecularly imprinted polymer; paper-based fluorescent sensor; tetracycline

期刊名称：POLYMERS （ 影响因子：4.9； 五年影响因子：5.2 ）

ISSN：

年卷期： 2024 年 16 卷 17 期

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收录情况： SCI

摘要： In this paper, we developed a paper-based fluorescent sensor using functional composite materials composed of graphene quantum dots (GQDs) coated with molecularly imprinted polymers (MIPs) for the selective detection of tetracycline (TC) in water. GQDs, as eco-friendly fluorophores, were chemically grafted onto the surface of paper fibers. MIPs, serving as the recognition element, were then wrapped around the GQDs via precipitation polymerization using 3-aminopropyltriethoxysilane (APTES) as the functional monomer. Optimal parameters such as quantum dot concentration, grafting time, and elution time were examined to assess the sensor's detection performance. The results revealed that the sensor exhibited a linear response to TC concentrations in the range of 1 to 40 mu mol/L, with a limit of detection (LOD) of 0.87 mu mol/L. When applied to spiked detection in actual water samples, recoveries ranged from 103.3% to 109.4%. Overall, this paper-based fluorescent sensor (MIPs@GQDs@PAD) shows great potential for portable, multi-channel, and rapid detection of TC in water samples in the future.

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