Application and modification of nickel-based metal-organic frameworks in electrochemical sensing

Metal-organic frameworks (MOFs) are porous materials, which possess a large specific surface area, various coordination types and modes, and versatile and adaptable morphologies and characteristics. MOFs have drawn much interest recently because of their appealing structure and potential for extensive use. With excellent characteristics, including high sensitivity, a low detection limit, and robust stability, nickel (Ni)-based MOFs have several benefits in electrochemical sensing. However, the weak conductivity of pure Ni-based MOFs limits their electrochemical applications. It is essential to further improve the characteristics and enhance the electrical conductivity of pure Ni-based MOFs aiming at enhancing their performance in electrochemical sensing. Herein, the three preparation methods of pure Ni-based MOFs are introduced, then the most recent advancements of pure Ni-based MOFs in electrochemical sensing applications are detailed in this work. In addition, it described how to adapt pure Ni-based MOFs to improve their electrochemical characteristics in three ways. In the introduction of these processes, the structures and morphologies of the prepared pure or modified Ni-based MOF are also described. It is envisaged that this work may give some extending techniques for future research of Ni-based MOFs materials in this burgeoning sector.