Citation: WANG Lin-Yu, HONG Sha-Sha, LI Yan-Yan, SONG Yong-Hai, WANG Li. Dopamine Electrochemical Sensor Based on Three-Dimensional Macroporous Carbon/Covalent Organic Framework Integrated Electrode[J]. Chinese Journal of Analytical Chemistry, ;2021, 49(6): 1053-1060. doi: 10.19756/j.issn.0253-3820.210418 shu

Dopamine Electrochemical Sensor Based on Three-Dimensional Macroporous Carbon/Covalent Organic Framework Integrated Electrode

Key Laboratory of Functional Small Organic Molecule, Ministry of Education, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China

Corresponding author: WANG Li, lwang@jxnu.edu.cn
Received Date: 7 April 2021
Revised Date: 21 April 2021

Fund Project: Supported by the National Natural Science Foundation of China (Nos.21765009, 21964010, 21465014, 21665012).

A novel covalent organic framework (COF_TFPB-TDF) was firstly synthesized by ammonaldehyde condensation reaction between 1,3,5-tris(p-formylphenyl) benzene and 1,4-benzenedicarbohydrazide. Then, three-dimensional macroporous carbon derived from kenaf stem (3D-KSC)/COF_TFPB-TDF integrated electrode was obtained by growing COF_TFPB-TDF on 3D-KSC. Scanning electron microscopy was used to characterize the structure of 3D-KSC/COF_TFPB-TDF. The results showed that 3D-KSC/COF_TF_PB-TDF had lamellar structure and there were many holes to support other materials. The performance of 3D-KSC/COF_TFPB-TDF electrode for detection of dopamine was studied by cyclic voltammetry. The results showed that the sensor had good performance for detecting dopamine, with low detection limit (0.045 μmol/L), wide linear range (0.134 μmol/L-0.06 mmol/L) and high sensitivity (369 μA/(mmol/L)/cm²). These excellent properties were mainly attributed to the larger specific surface area and pore structure of 3D-KSC/COF_TFPB-TDF, which also made the material had a good application prospect in other aspects.
- Covalent organic framework,
- Dopamine,
- Electrochemical sensor,
- Three-dimensional macroporous carbon
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