Highly efficient and selective visible-light driven CO2-to-CO conversion by a Co-based cryptate in H2O-CH3CN solution
publication
| About |
|---|
Abstract
Summary
A photochemical reduction of CO2 to CO was shown using the copper cryptates 100956 or 100957 as catalyst in combination with the ruthenium photosensitizer [Ru(phen)3][PF6]2. Turnover numbers (TONs) up to 51392 and a selectivity of 98% for CO were reached in MeCN/H2O. The experiments were conducted under visible-light irradiation (λ = 450 nm) using TEOA as sacrificial electron donor (see section SEDs below).
Advances and special progress
The authors presented a highly active copper-based catalyst for the visible-light catalyzed reduction of CO2 to CO with high TON and TOF values.
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 a copper complex as a catalyst. The catalytic system performs best (referring to the TON of CO production) in MeCN/H2O with complex 100956.
Catalyst
Photosensitizer
Investigation
| cat | cat conc [µM] | PS | PS conc [mM] | e-D | e-D conc [M] | solvent A | . | . | . | . | λexc [nm] | . | TON CO | . | . | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | 0.000025 | 0.4 | 0.3 | 450 | 33792 | |||||||||||
| 2. | 0.000025 | 0.4 | 0.3 | 450 | 18656 | |||||||||||
| 3. | 0.4 | 0.3 | 450 | 0 | ||||||||||||
| 4. | 0.000025 | 0.3 | 450 | 0 | ||||||||||||
| 5. | 0.000025 | 0.4 | 0.3 | 0 | ||||||||||||
| 6. | 0.000025 | 0.4 | 450 | 0 | ||||||||||||
| 7. | 0.0005 | 0.4 | 0.3 | 450 | 600 | |||||||||||
| 8. | 0.001 | 0.4 | 0.3 | 450 | 1582 | |||||||||||
| 9. | 0.0000125 | 0.4 | 0.3 | 450 | 51392 |
Sacrificial electron donor
In this study, the experiments were done with the sacrificial electron donor TEOA.
Additives
In this study, no additives were tested.
Investigations
- photocatalytic CO2 conversion under different conditions (Molecular process, Photocatalytic CO2 conversion experiments)
