Ultrasensitive rutin electrochemical sensor based on in-situ salt template growth two-bimetallic ZIF-derived zinc/cobalt@nitrogen doped ultra-thin carbon nanosheets (Zn/Co@N-CNSs)

摘要

Rutin (RU) is a common flavonoid compound that has attracted widespread attention. Accurately and quickly detecting RU is crucial. Herein, a novel electrochemical RU sensor based on in-situ salt template two-dimension ZIF-derived ultra-thin zinc/cobalt@ nitrogen doped carbon nanosheets composites modified glassy carbon electrode (Zn/Co@N-CNSs/GCE) was constructed. Zn/Co-ZIF was synthesized by in-situ salt template method and the ultra-thin sheet structure Zn/Co@N-CNSs were obtained by directly pyrolysis Zn/Co-ZIF and template removal showing good electrochemical performance for rutin detection, which benefited from the sheet structure with larger surface. For the detection of rutin, the Zn/Co@N-CNSs/GCE showed wider linear range (10 nM 1000 nM) and lower detection limit (LOD, 2.7 nM). In addition, the sensor achieved good recovery and accuracy in detecting RU in actual samples (RU tablets and orange juice).

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