Novel Asymmetric Iron Porphyrins for Photocatalytic CO₂ Reduction to CH₄.

ABSTRACT: Developing earth-abundant transition metal catalysts for CO₂ reduction is a promising approach for sustainable energy conversion. Here, the synthesis and photocatalytic activity of two novel asymmetric iron porphyrin complexes, namely iron 5-(N-benzyloxycarbonyl-4-aminophenyl)-10,15,20-tris(4-aminophenyl)porphyrin (Fe-p-NH₂-Cbz) and iron 5-(N-benzyloxycarbonyl-4-aminophenyl)-10,15,20-tris(4-(trimethylammonio)phenyl)porphyrin (Fe-p-TMA-Cbz) for visible-light-driven CO₂ reduction to CO and CH₄ are reported. Under blue light (447 nm) irradiation, Fe-p-NH₂-Cbz and Fe-p-TMA-Cbz achieve turnover numbers (TONs) of 20 and 23 for CO, and 6 and 10 for CH₄, respectively, using a commercially available organic photosensitizer (Phenox),

SUBMITTER: Espinoza-Suarez EJ 

PROVIDER: S-EPMC12456383 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature