Environmental pollutants and biomolecules detection using ZIF-67 and its composites as electrode modifier: A review

In the previous few years, it has been observed that zeolitic imidazolate framework (ZIF) based materials are promising catalytic materials for various applications such as catalysis, electrocatalysis, and energy storage oxygen or hydrogen evolution reactions. In particular, cobalt based ZIF materials have been extensively used in electrochemical applications due to its larger surface area, high porosity, and catalytic properties. The ZIF-67 is cobalt based ZIF material which was explored in the development of various electrochemical sensors for environmental monitoring and clinical diagnosis applications. This review article summarizes the progress in the formation of ZIF-67 based hybrid materials with graphene, carbon nanotubes, metal oxides, and MXenes etc for electrochemical sensing applications. The limitations, challenges and future perspectives for ZIF-67 based materials for electrochemical sensing applications have been discussed. It is expected that present review article would be beneficial for the researchers working on ZIF-67 based electrochemical sensors for environmental monitoring and healthcare system.