fig2

Figure 2. (A) Synthetic process of MOF nanosheet array; (B) SEM image for NiFe-MOF nanosheet; (C) Electrocatalytic properties of NiFe-MOF and other samples for OER. (A)-(C) were reproduced with permission^[41]. Copyright 2017, Nature Publishing Group; (D) Schematic illustration of synthetic process for in situ growth of microbundles of NH₂-MIL-88B(Fe₂Ni)-MOF nanosheets on NF, reproduced with permission^[72]. Copyright 2018, Wiley-VCH; (E) Schematic illustration of the synthesis of FeNi-MOF nanoarrays via a hydrothermal method, reproduced with permission^[73]. Copyright 2021, American Chemical Society. MOF: Metal-organic framework; SEM: scanning electron microscope; OER: oxygen evolution reaction; MIL: material of Institut Lavoisier; NF: nickel foam.