An integrated Re(I) photocatalyst and sensitizer that activates the formation of formic acid from reduction of CO2: Difference between revisions
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====Additional remarks==== | ====Additional remarks==== | ||
The complex {{#moleculelink:|link=SQEHJZNRDJMTCB-UHFFFAOYSA-M|image=false|width=300|height=200}} can act both as a photocatalyst and sensitizer, but its performance is considerably enhanced by the addition of {{#moleculelink:|link=KLDYQWXVZLHTKT-UHFFFAOYSA-N|image=false|width=300|height=200}} as supplemental photosensitizer. | The complex {{#moleculelink:|link=SQEHJZNRDJMTCB-UHFFFAOYSA-M|image=false|width=300|height=200}} can act both as a photocatalyst and sensitizer, but its performance is considerably enhanced by the addition of {{#moleculelink:|link=KLDYQWXVZLHTKT-UHFFFAOYSA-N|image=false|width=300|height=200}} as supplemental photosensitizer. The variation of the catalyst concentration also showed a drastic influence on the performance of the catalytic system. | ||
=== Content of the published article in detail === | === Content of the published article in detail === | ||
Revision as of 13:03, 16 January 2024
Abstract
Summary
A photochemical reduction of CO2 to formic acid was shown using the rhenium catalyst and sensitizer [Re(bpy)2(CO)2][OTf] in combination with the supplemental photosensitizer [Ru(bpy)3][PF6]. Turnover numbers (TONs) up to 2750 for formic acid were reached in dimethylacetamide. The experiments were conducted under visible-light irradiation (λ = 405 nm) with TEOA (see section SEDs below) as sacrificial electron donor.
Advances and special progress
A unprecedented rhenium complex was used as an integrated photosensitizer/catalyst to generate formic acid from CO2; other rhenium catalysts only allow for the formation of CO as the reduction product.
Additional remarks
The complex [Re(bpy)2(CO)2][OTf] can act both as a photocatalyst and sensitizer, but its performance is considerably enhanced by the addition of [Ru(bpy)3][PF6] as supplemental photosensitizer. The variation of the catalyst concentration also showed a drastic influence on the performance of the catalytic system.
Content of the published article in detail
Catalyst
Photosensitizer
Investigation
Sacrificial electron donor
In this study, the experiments were done with the sacrificial electron donor TEOA (100507).
Additives
No additives were tested in this study.
Investigations
- Study on the concentration of catalyst (Molecular process, Photocatalytic CO2 conversion experiments)
- Solvent effect study between DMA DMF and acetonitrile (Molecular process, Photocatalytic CO2 conversion experiments)
- Time profile in DMF (Molecular process, Photocatalytic CO2 conversion experiments)
- Effect of proton donor (Molecular process, Photocatalytic CO2 conversion experiments)
