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Molecularly Imprinted Electrochemical Sensor Based on Au-MoS2/MOF(Fe2+/Fe3+) for Rapid Detection of Tenuazonic Acid

文献类型： 外文期刊

作者： Liu, Ming-Hui 1 ; Cheng, Meng 2 ; Guo, Da-Kai 2 ; Han, Zheng 2 ; Nie, Dong-Xia 1 ;

作者机构： 1.Shanghai Ocean Univ, Coll Food Sci, Shanghai 201306, Peoples R China

2.Shanghai Acad Agr Sci, Inst Qual Stand & Testing Technol Agr Prod, Shanghai 201403, Peoples R China

关键词： Molecular imprinting; Au-MoS2/MOF(Fe2+/Fe3+); Electrochemical sensor; Tenuazonic acid; Catalytic cycle amplification

期刊名称：CHINESE JOURNAL OF ANALYTICAL CHEMISTRY （ 影响因子：1.3； 五年影响因子：1.0 ）

ISSN： 0253-3820

年卷期： 2025 年 53 卷 2 期

页码：

收录情况： SCI

摘要： A molecularly imprinted electrochemical sensor for rapid detection of tenuazonic acid (TeA) was developed based on the Au-MoS2/MOF(Fe2+/Fe3+) high-efficiency catalytic cycle amplification strategy, using p-aminobenzoic acid (PABA) as the functional monomer, and TeA as the template molecule. The molecularly imprinted polymer (MIP) was prepared on the surface of Au-MoS2/MOF(Fe2+/Fe3+) modified electrode through electropolymerization. By introducing flower-like MoS2 nanoflakes (MoS2 NFs) as a co-catalyst into a mixed-valence structured Fe-MOF(Fe2+/Fe3+), the H2O2 electrochemical signal of the MIP/Au-MoS2/MOF(Fe2+/Fe3+)/GCE was significantly enhanced. Under optimal conditions, the sensor exhibited good selectivity and high sensitivity toward TeA. A linear relationship (R2=0.992) was observed between the electrochemical response and TeA concentration in the range of 0.001-10 mu g/kg, with a detection limit of 0.3 ng/kg. The developed method was successfully applied to determination of TeA in fruit samples, with recoveries ranging from 90.8% to 110.8%, and relative standard deviations from 1.9% to 8.4%.

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