Review-2D Layered Metal Organic Framework Nanosheets as an Emerging Platform for Electrochemical Sensing

Two dimensional layered metal-organic framework nanosheets, as a new class of porous crystalline materials have received extensive research attention owing to its intriguing chemistry and remarkable properties like ultrathin thickness, tunable structure, large specific surface area, high aspect ratio, accessible active sites, large pore volume etc. which leads to diverse applications. The unique properties originating from the combination of 2D structure and MOF provide opportunities for enhanced electrochemical activity due to the fast charge transfer and mass transport as well as increased number of surface active sites. In this review, we focus on the recent developments in 2D MOF nanosheet research with emphasize on synthesis and application. First, we summarize the different synthetic methods used for 2D MOF preparation using top-down and bottom-up approaches. In addition, the progress in the application of 2D MOF nanosheet as electrochemical sensing platform is explained in detail. Finally, the challenges and future perspectives for 2D MOF nanosheet research is presented.