Volume 49 Number 3

Enhancing non-enzymatic glucose electrochemical sensing performance with ZnO@ZIF-67 nanoarrays

Lin-an Cao^a,*, Min Wei^a, Zhiqiang Wu^a, Zhifeng Zhang^a, Dailian Wang^a, Tiaobin Zhao^a, Lin Hu^b

 
ABSTRACT:     Nanostructured metal oxide (MOX) composites exhibit significant potential for non-enzymatic glucose detection. This study introduces a novel metal oxide nanocomposite, ZnO@ZIF-67 core-shell nanoarrays, as an electrochemical enzyme-free glucose sensor electrode material, synthesized via a straightforward hydrothermal method. In this configuration, the ZIF-67 shell, characterized by its porous structure and abundant catalytically active metal centers, not only facilitates the preconcentration of glucose molecules but also offers a substantial number of catalytic active sites for glucose oxidation. Consequently, the ZnO@ZIF-67 composite demonstrates a sensitivity that is 4.5 times greater and a limit of detection that is 3 times lower for glucose compared to pristine ZnO nanoarrays. Furthermore, the ZnO@ZIF-67-based electrochemical sensor exhibits remarkable anti-interference capabilities and long-term stability. The design strategy of employing a MOX@MOF core-shell structure for electrode materials presents a novel approach for enhancing the performance of glucose monitoring.

Download PDF

0 Downloads 91 Views

* Corresponding author, E-mail: caolinan136@163.com

Received 2 Apr 2023, Accepted 8 Jan 2025