One-step green synthesis of flower-like non-precious metal (Cu, Ni, Fe or Zn) doped ZIF-67 and its application as non-enzymatic electrochemical glucose sensors

• Published in: International journal of electrochemical science 2024-09, Vol.19 (9), p.100736, Article 100736
• Main Authors: Hu, Yile, Wei, Zhiqiang, Li, Wei, Wang, Xiaopeng, Yang, Hui
• Format: Article
• Language: English
• Subjects: Flower-like non-precious metal (Cu, Ni, Fe or Zn) doped ZIF-67; Non-enzymatic electrochemical glucose sensors; ZIF-67
• ISSN: 1452-3981; 1452-3981
• DOI: 10.1016/j.ijoes.2024.100736

Co ions and imidazolate ligands can be self-assembled into a novel metal-organic frameworks (MOFs) with zeolite-like topological structures, which is named as ZIF-67. Flower-like ZIF-67 can be precisely prepared by one-step green synthesis method under specific experimental conditions, and has excellent enzyme-like electrocatalytic activity toward glucose. Non-precious metal (Cu, Ni, Fe or Zn) can be doped into flower-like ZIF-67 while maintaining zeolite-like topological structures, which may also be an important way to enhance the electrocatalytic performances of ZIF-67. In this study, flower-like non-precious metal (Cu, Ni, Fe or Zn) doped ZIF-67 was contrastively researched by physical characterizations and electrochemical techniques, and was employed as electrocatalysts for non-enzymatic electrochemical glucose sensors. Flower-like non-precious metal (Cu, Ni, Fe or Zn) doped ZIF-67 all exhibits perfect electrocatalytic activities toward glucose, among them the performance of Fe(5 %)-ZIF-67 is the most outstanding.