Metal-free reduction of CO2 to formate using a photochemical organohydride-catalyst recycling strategy
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Abstract
Summary
A photochemical reduction of CO2 to CO was shown using the iron complexes 100947, 100948 and 100949 as catalysts in combination with the organic photosensitizer 4CzIPN. Turnover numbers (TONs) of 6320 and a selectivity of 99.4% for CO were reached in DMF/H2O with catalyst 100949. The experiments were conducted under visible-light irradiation (λ = 440 nm) using TEA as sacrificial electron donor (see section SEDs below).
Advances and special progress
Additional remarks
Content of the published article in detail
The article contains results for the reduction of CO2 to CO under visible-light catalysis using the iron complex 100949 as a catalyst. The catalytic system performs best (referring to the TON of CO production) in DMF/H2O.
Catalyst
Photosensitizer
3,6-bis(dimethylamino)-9-phenyl-9H-carbazole
Investigation
Sacrificial electron donor
In this study, the experiments were done with the sacrificial electron donor ascorbic acid L-ascorbate, sodium. The use of BIH was tested, but found to yield worse results.
Additives
In this study,
Investigations
- photocatalytic CO2 conversion under different conditions (Molecular process, Photocatalytic CO2 conversion experiments)
