Metal-organic framework-derived porous ternary ZnCo2O4 nanoplate arrays grown on carbon cloth for simultaneous electrochemical determination of ascorbic acid, dopamine, and uric acid

作者：Hu, Zhikun; Zhao, Peng; Li, Jiawei; Chen, Yuanyuan; Yang, Huisi; Zhao, Jiaying; Dong, Jiangbo; Qi, Na; Yang, Mei^*; Huo, Danqun^*; Hou, Changjun^*

来源：Analytical Methods, 2022, 14(43): 4330-4337.

DOI：10.1039/d2ay01058e

• ION BATTERY ANODE
• MICROSPHERES

Metal-organic frameworks derived from ternary metal oxide directly grown on the conductive substrate have attracted great interest in electrochemical sensing. In this work, metal-organic framework-derived ternary ZnCo2O4 nanoplate arrays that were grown on carbon cloth (ZnCo2O4 NA/CC) are fabricated and applied for the electrochemical determination of ascorbic acid (AA), dopamine (DA), and uric acid (UA). Field emission scanning electron microscope (FESEM) reveals that a network-like CC substrate is covered with considerable nanoplate arrays, presenting a large specific area. X-ray photoelectron spectroscopy (XPS) demonstrates the nanoplate arrays to be composed of ZnCo2O4. Benefiting from the unique array morphology and ternary element composition, the ZnCo2O4 NA/CC shows desirable performances for simultaneous detection of AA, DA, and UA. The individual detection limits are 7.14 mu M for AA, 0.25 mu M for DA, and 0.33 mu M for UA. Additionally, the ZnCo2O4 NA/CC is successfully applied for the quantitative determination of AA, DA, and UA in spiked serum samples, showing its great application potential.

• 单位
  重庆大学