1. Electrochemical detection of carbendazim using molecularly imprinted poly(3,4-ethylenedioxythiophene) on Co,N co-doped hollow carbon nanocage@CNTs-modified electrode.
- Author
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Xue S, Zou J, Li J, Xu J, Chen H, Wang L, Gao Y, Duan X, and Lu L
- Subjects
- Molecularly Imprinted Polymers chemistry, Limit of Detection, Molecular Imprinting, Malus chemistry, Solanum lycopersicum chemistry, Citrus sinensis chemistry, Bridged Bicyclo Compounds, Heterocyclic chemistry, Electrochemical Techniques instrumentation, Nanotubes, Carbon chemistry, Electrodes, Carbamates analysis, Carbamates chemistry, Polymers chemistry, Food Contamination analysis, Benzimidazoles chemistry, Benzimidazoles analysis
- Abstract
Precisely detecting trace pesticides and their residues in food products is crucial for ensuring food safety. Herein, a high-performance electrochemical sensing platform was developed for the detection of carbendazim (CBZ) using Co,N co-doped hollow carbon nanocage@carbon nanotubes (Co,N-HC@CNTs) obtained from core-shell ZIF-8@ZIF-67 combined with a poly(3,4-ethylenedioxythiophene) (PEDOT) molecularly imprinted polymer (MIP). The Co,N-HC@CNTs exhibited excellent electrocatalytic performance, benefitting from the synergistic effect of CNTs that provide a large specific surface area and excellent electrical conductivity, Co,N co-doped carbon nanocages that offer high electrocatalytic activity and hollow nanocage structures that ensure rapid diffusion kinetics. The conductive PEDOT-MIP provided specific binding sites for CBZ detection and significantly amplified the detection signal. The sensor showed superior selectivity for CBZ with an extremely low detection limit of 1.67 pmol L
-1 . Moreover, the method was successfully applied to detect CBZ in tomato, orange and apple samples, achieving satisfactory recovery and accuracy, thus demonstrating its practical feasibility., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier Ltd. All rights reserved.)- Published
- 2024
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