二维ZIF-L纳米片作为高性能非酶葡萄糖传感器
Two-dimensional ZIF-L nanosheets as high performance non-enzymatic glucose sensor
摘要：
基于二维（2D）Co-ZIF-L纳米片，开发了一种高效的葡萄糖非酶电化学检测生物传感器。制备的Co-ZIF-L纳米片电极表现出优异的性能，具有769.5 × 10 $^{-6}$ A mM $^{-1}$ cm $^{-2}$的较高灵敏度和90.4 nM的较低检测限，而构建的3D ZIF-67纳米颗粒电极显示出较弱的灵敏度，为697.4 × 10 $^{-6}$ A mM $^{-1}$ cm $^{-2}$，并且检测范围有限，为2 × 10 10 15 mM。10 $^{-6}$ M至414 *10 $^{-6}$ M。此外，基于Co-ZIF-L的非酶葡萄糖生物传感器具有可接受的选择性、长期稳定性以及重现性。这项工作可能提供一种新的方法来开发二维ZIF纳米片作为电化学生物传感器的潜在候选者。
英文摘要：
An effective biosensor based on two-dimensional (2D) Co-ZIF-L nanosheets for sensitive electrochemical non-enzymatic glucose detection is developed, which exhibits high electrocalalytic activities towards glucose due to the ordered porous structure as well as ultrahigh specific surface area. The fabricated Co-ZIF-L nanosheets electrodes present an outstanding performance with higher sensitivity of 769.5 *10$^{-6}$ A mM$^{-1}$ cm$^{-2}$ and lower detect limit of 90.4 nM, while the constructed 3D ZIF-67 nanoparticles electrodes show a weaker sensitivity of 697.4 *10$^{-6}$ A mM$^{-1}$ cm$^{-2}$ and a limited detection range from 2 *10$^{-6}$ M to 414 *10$^{-6}$ M. Furthermore, the Co-ZIF-L based non-enzymatic glucose biosensors possess an acceptable selectivity, long-term stability as well as reproducibility. This work may offer a new approach to develop 2D ZIF nanosheets as a potential candidate in electrochemical biosensors.
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