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A free-metal single covalent organic framework electrochemical detective platform for sensitive sensing of
Mei-Jie Wei1, Ze-Qi Wei1, Rui Zhang1
1School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng, China.
Abstract:
Carbendazim abuse in agriculture can lead to the residue in water and food, which may bring about adverse effects to human's health. In this study, we report the solvothermal synthesis of free-metal single TT-COF with one-step strategy and the TT-COF-based electrochemical sensor is fabricated for the further sensing of carbendazim. The TT-COF possesses high surface area, excellent conductivity and outstanding electrocatalytic activity. Therefore, the TT-COF/GCE is applied for the determination of carbendazim with CV and DPV techniques. This TT-COF/GCE sensor shows wide linear range of 0.005-5 μM and the low limit of detection (LOD) of 2.21 nM towards the detection of carbendazim. More importantly, the projected TT-COF/GCE sensor demonstrates satisfactory recoveries by estimating carbendazim in apple, tomato and pear juice real samples.
