Recent progress of two-dimensional metal-organic-frameworks: From synthesis to electrocatalytic oxygen evolution

A bimetallic NiFe MOF with ultra-thin two-dimensional nanosheet structure effectively accelerates oxygen evolution reaction

“…After introducing the Fe element, the original bulk MOF is changed into an ultrathin sheet-like structure. These ultrathin 2D nanosheets increase the specific surface area of the catalyst, 43,44 resulting in a larger contact area between the catalyst and the electrolyte. Meanwhile, these nanosheets also provide a large number of electroactive sites, suggesting that the electrolyte ions can diffuse to the surface of the active material more quickly.…”

Recent progress on 2D material-based nanoarchitectures for small molecule electro-oxidation

“…40,41 Extensive investigations have been carried out on 2D materials in various energy-related applications due to their distinctive 2D characteristics, including atomic thickness, large specific surface area, and tunable electronic properties. 42,43 Taking cues from graphene's application, researchers have synthesized and employed various other 2D nanomaterials and their derivatives in electrocatalysis, including graphitic carbon nitride (g-C 3 N 4 ), 44,45 layered double hydroxides (LDHs), 46,47 transition metal carbides and nitrides (MXenes), 48,49 metal–organic frameworks (MOFs), 50,51 molybdenum disulfide (MoS 2 ) 52,53 and so on. The advent of these novel 2D nanomaterials significantly expands the diversity and functionality of electrode materials, paving the way for developing high-efficiency electrocatalytic systems.…”

Ultrathin Fe-MOFs modified by Fe9S10 for highly efficient oxygen evolution reaction

“…3,4 During the process of water splitting, the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) take place at the cathode and anode, respectively. 5,6 The OER process features a four-electron process in alkaline media, 7,8 making it more complex than the HER process. The slow kinetics of the four-electron process often produce a high overpotential, which severely limits the energy conversion efficiency.…”