ABSTRACT
Metal−organic frameworks (MOFs) are compounds having metal nodes combining with the organic molecule to form a mesh-like structure. They are highly ordered crystalline materials with extremely large porosity, high surface area, tunable structure, and thermal and chemical stability. The presence of metal ions endows them with the redox-active and catalytic sites which makes them wonderful candidates for electrochemical sensing. Moreover, precise chemical modification in their structure or modifying them to form metal oxides, carbon compounds, and composites promotes their electrochemical performances for next-generation electrochemical energy and sensor applications. Due to porous specific spatial structures MOFs show high specificity and selectivity for the target analytes of different sizes and structures that increases their value for detecting toxic gases including ammonia, sulfur dioxide, carbon monoxide, and so on. In this chapter, we focus on recent progress achieved in MOF research with respect to the electrochemical sensing of ammonia. From the reported literature as well as from the experimental experience of researchers the current challenges in this field are also discussed.
