A sensitive electrochemical sensor based on ZIF-8–acetylene black–chitosan nanocomposites for rutin detection |
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| Authors: | Ya-feng Jin Chuang-ye Ge Xiao-bo Li Miao Zhang Guang-ri Xu Dong-hao Li |
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| Institution: | Key Laboratory of Natural Resources of the Changbai Mountain and Functional Molecular (Yanbian University), Ministry of Education, Park Road 977, Yanji City Jilin Province 133002 China.; Department of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003 China, +86-0373-3693027 ; State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510641 P. R. China |
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| Abstract: | Herein, we fabricated a sensitive rutin electrochemical sensor via modifying glassy carbon electrode (GCE) with zeolitic imidazolate framework-8 (ZIF-8) and acetylene black (AB) in the presence of chitosan (CS). The electrochemical activity and experimental parameters of the ZIF-8-AB-CS/GCE sensor were investigated by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Under the optimal conditions, the sensor presented a reasonable linear response in the range of 0.1–10 μM with a limit of detection (LOD) as low as 0.004 μM (S/N = 3). The sensor possessed good reproducibility and high stability, and was successfully applied to detect rutin tablet samples with satisfactory results, which was attributed to the synergistic effect between ZIF-8 and AB. Meanwhile, the sensor displayed a potential application for detection of other analytes in real samples. Furthermore, a probable interaction mechanism was proposed to account for the interaction between rutin and the nanocomposite electrode, which was not discussed in previous reports.A sensitive ZIF-8-AB-CS/GCE for rutin detection is constructed and the interaction between them is discussed for the first time. |
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