Highly Efficient Light‐Driven CO₂ to CO Reduction by an Appropriately Decorated Iron Porphyrin Molecular Catalyst

The photocatalytic CO2 reduction into value-added chemicals is regarded as one promising technology to mitigate environmental issues and the energy crisis of modern world due extended emissions. Recent advances have shown that iron porphyrins are considered most efficient molecular catalysts in activation molecules like CO2. Thus, a suitably modified FeIII porphyrin ([FeIII(TF4TMAP)](CF3SO3)5) was prepared its catalytic activity terms studied. This catalyst possesses four fluorine substituents ortho meta position each meso-phenyl group porphyrin, while trimethylammonium groups were placed para position. Photocatalytic studies performed presence an iridium complex chromophore [FeIII(TF4TMAP)](CF3SO3)5 can effectively reduce CO2, achieving excellent turnover numbers (up 5500 TONs) high frequencies. main product this system CO, only small amount hydrogen detected, presenting maximum selectivity 86 % for CO.