Electrocatalytic hydrogen evolution of MOF-derived materials based on conjugated or unconjugated ligands

Two organic ligands, one rigid and one flexible, were designed and used to construct two cobalt-based metal-organic frameworks (MOFs) with coligands to obtain 3D and 2D structures, respectively. Both the Co-based MOFs were pyrolyzed at different temperatures to obtain the derived materials, and their electrocatalytic hydrogen evolution properties were studied. The results show that the electrocatalytic hydrogen evolution performance of MOF derivatives based on the rigid ligand was better than that of MOF derivatives based on the flexible organic ligand. Two organic ligands, one rigid and one flexible, were used to construct two cobalt MOFs, respectively. The HER performance of the derived materials based on the rigid ligand is better than that of derivatives based on the flexible organic ligand.