双金属MOF衍生的电催化剂，其中磁性合金纳米颗粒限制在S、N掺杂的碳纳米管中：一种用于同时测定食品中抗生素的一次性磁性传感器。

Bimetallic MOF derived electrocatalyst with magnetic alloy nanoparticles confined in S, N-doped carbon nanotubes: A disposable magnetic sensor for simultaneous determination of antibiotics in food.

作者信息

Qian Xinmei, Li Chunxiang, Zheng Mingyu, Wang Jinglun, Huang Haowen, Deng Keqin

机构信息

Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan University of Science and Technology, Xiangtan 411201, People's Republic of China; Hunan Province College Key Laboratory of Molecular Design and Green Chemistry, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China.

Hunan Province College Key Laboratory of Molecular Design and Green Chemistry, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China.

出版信息

Food Chem. 2025 Feb 15;465(Pt 2):142141. doi: 10.1016/j.foodchem.2024.142141. Epub 2024 Nov 21.

DOI:10.1016/j.foodchem.2024.142141

PMID:39581099

Abstract

Very few MOF-related derivatives have been applied for sensors. Sensitive analysis of antibiotics in food products is one of the crucial research fields. The work described the synthesis of magnetic electrocatalyst with FeCo alloy nanoparticles confined in S, N-doped bamboo-like carbon nanotubes (FeCo@S,N-CNTs) by using bimetallic MOF as precursor. For comparison, a series of materials were prepared and used to modify screen-printed electrode (SPE). Their electrocatalytic capacities were investigated for the electrochemical reduction of two antibiotics, chloramphenicol (CAP) and nitrofurantoin (NFT). By using cyclic voltammetry (CV) and differential pulse voltammetry (DPV), the magnetic FeCo@S,N-CNTs was found to possess the better electrocatalysis. Using the disposable FeCo@S,N-CNTs/SPE constructed by magnetic control, simultaneous analysis of CAP and NFT was achieved in linear ranges of 0.05-320.0 μM and 0.01-75.0 μM with the limit of detection of 20.0 nM and 3.5 nM, respectively. The real sample detection validated the practicability of FeCo@S,N-CNTs/SPE.

摘要

与金属有机框架（MOF）相关的衍生物很少被应用于传感器。食品中抗生素的灵敏分析是关键研究领域之一。这项工作描述了以双金属MOF为前驱体，合成了铁钴合金纳米颗粒限制在硫、氮掺杂竹节状碳纳米管（FeCo@S，N-CNTs）中的磁性电催化剂。为作比较，制备了一系列材料并用于修饰丝网印刷电极（SPE）。研究了它们对两种抗生素氯霉素（CAP）和呋喃妥因（NFT）电化学还原的电催化能力。通过循环伏安法（CV）和差分脉冲伏安法（DPV）发现，磁性FeCo@S，N-CNTs具有更好的电催化性能。利用磁控构建的一次性FeCo@S，N-CNTs/SPE，在0.05 - 320.0 μM和0.01 - 75.0 μM的线性范围内实现了对CAP和NFT的同时分析，检测限分别为20.0 nM和3.5 nM。实际样品检测验证了FeCo@S，N-CNTs/SPE的实用性。