“…Metal–organic frameworks (MOFs), porous crystalline materials constructed from clusters of metal ions and organic bridging ligands, are particularly appealing for designing efficient OER electrocatalysts. Compared to other porous materials, such as zeolites and porous carbons, MOFs are unique in terms of their exceedingly high porosities, tunable pores, and diverse functionalities. , MOFs with well-dispersed metal sites feature better electrocatalytic activity , than conventional metal oxides, , hydroxides, , metal sulfides, and metal phosphides. , The versatility of MOF composition by simply changing the metal ion (i.e., size, acidity, softness) and functional ligand (i.e., polarity, length, hydrophobicity) makes tuning their properties for OER possible. Various MOFs based on the 1,4 dicarboxylic acid benzene (1,4- BDC) linker, resulting in M-1,4-BDC, have been synthesized by changing the metal ion, such as Zn 2+ , Cu 2+ , Co 2+ , La 3+ , Mn 2+ , Fe 3+ , and Ni 2+ .…”