Molecularly Imprinted Electrochemical Sensor Based on Au-MoS2/MOF(Fe2+/Fe3+)for Rapid Detection of Tenuazonic Acid
10.19756/j.issn.0253-3820.241423
- VernacularTitle:基于Au-MoS2/MOF(Fe2+/Fe3+)的分子印迹电化学传感器用于细交链孢菌酮酸的快速检测
- Author:
Ming-Hui LIU
1
;
Meng CHENG
;
Da-Kai GUO
;
Zheng HAN
;
Dong-Xia NIE
Author Information
1. 上海海洋大学食品学院,上海 201306;上海市农业科学院农产品质量标准与检测技术研究所,上海 201403
- Keywords:
Molecular imprinting;
Au-MoS2/MOF(Fe2+/Fe3+);
Electrochemical sensor;
Tenuazonic acid;
Catalytic cycle amplification
- From:
Chinese Journal of Analytical Chemistry
2025;53(2):246-257
- CountryChina
- Language:Chinese
-
Abstract:
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 μg/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%.
