A lead-porphyrin metal-organic framework: gas adsorption properties and electrocatalytic activity for water oxidation

A 3D non-interpenetrating porous metal-organic framework [Pb-2(H2TCPP)]center dot 4DMF center dot H2O (Pb-TCPP) (H6TCPP = 5,10,15,20-tetra (carboxyphenyl) porphyrin) was synthesized by employment of a robust porphyrin ligand. Pb-TCPP exhibits a one-dimensional channel possessing fairly good capability of gas sorption for N-2, H-2, Ar, and CO2 gases, and also features selectivity for CO2 over CH4 at 298 K. Furthermore, Pb-TCPP shows electrocatalytic activity for water oxidation in alkaline solution. It is the first 3D porous Pb-MOF that exhibits both gas adsorption properties and electrocatalytic activity for an oxygen evolution reaction (OER).