Highly efficient and selective visible-light driven CO2-to-CO conversion by a Co-based cryptate in H2O-CH3CN solution: Difference between revisions
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===Abstract=== | ===Abstract=== | ||
====Summary==== | ====Summary==== | ||
A photochemical reduction of CO<sub>2</sub> to CO was shown using the copper cryptates {{#moleculelink:|link=ZEYWCDNYJFKWNP-UHFFFAOYSA-L|image=false|width=300|height=200}} or {{#moleculelink:|link=PFCMEJLVBIHANS-UHFFFAOYSA-L|image=false|width=300|height=200}} as catalyst in combination with the ruthenium photosensitizer . Turnover numbers (TONs) up to 51392 and a selectivity of 98% for CO were reached in MeCN/H<sub>2</sub>O. The experiments were conducted under visible-light irradiation (λ = 450 nm) using TEOA as sacrificial electron donor (see section SEDs below). | A photochemical reduction of CO<sub>2</sub> to CO was shown using the copper cryptates {{#moleculelink:|link=ZEYWCDNYJFKWNP-UHFFFAOYSA-L|image=false|width=300|height=200}} or {{#moleculelink:|link=PFCMEJLVBIHANS-UHFFFAOYSA-L|image=false|width=300|height=200}} as catalyst in combination with the ruthenium photosensitizer {{#moleculelink:|link=YRYUXGTVQZIGNQ-UHFFFAOYSA-N|image=false|width=300|height=200}}. Turnover numbers (TONs) up to 51392 and a selectivity of 98% for CO were reached in MeCN/H<sub>2</sub>O. 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==== | ====Advances and special progress==== | ||
====Additional remarks==== | ====Additional remarks==== | ||
===Content of the published article in detail=== | ===Content of the published article in detail=== | ||
The article contains results for the reduction of CO<sub>2</sub> 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/H<sub>2</sub>O with complex | The article contains results for the reduction of CO<sub>2</sub> 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/H<sub>2</sub>O with complex {{#moleculelink:|link=ZEYWCDNYJFKWNP-UHFFFAOYSA-L|image=false|width=300|height=200}}. | ||
====Catalyst==== | ====Catalyst==== | ||
<chemform smiles="C1C2CNCCN3CCNCC4=CC5C=CC(CN([H])6~[Co+]7(~N(CC6)(CCNCC6C=CC(C=2)=C(C=6)C=1)CCN~7([H])CC1C=CC2C=C(CNCC3)C=CC=2C=1)O)=CC=5C=C4.[Cl-](=O)(=O)(=O)=O" inchi="1S/C48H60N8.ClHO4.Co.H2O/c1-7-43-26-38-2-8-44(43)25-37(1)31-49-13-19-55-20-15-51-33-39-3-9-47-29-41(5-11-45(47)27-39)35-53-17-23-56(22-14-50-32-38)24-18-54-36-42-6-12-46-28-40(34-52-16-21-55)4-10-48(46)30-42;2-1(3,4)5;;/h1-12,25-30,49-54H,13-24,31-36H2;(H,2,3,4,5);;1H2/q;;+2;/p-2" inchikey="ZEYWCDNYJFKWNP-UHFFFAOYSA-L" height="200px" width="300px" float="none"> | <chemform smiles="C1C2CNCCN3CCNCC4=CC5C=CC(CN([H])6~[Co+]7(~N(CC6)(CCNCC6C=CC(C=2)=C(C=6)C=1)CCN~7([H])CC1C=CC2C=C(CNCC3)C=CC=2C=1)O)=CC=5C=C4.[Cl-](=O)(=O)(=O)=O" inchi="1S/C48H60N8.ClHO4.Co.H2O/c1-7-43-26-38-2-8-44(43)25-37(1)31-49-13-19-55-20-15-51-33-39-3-9-47-29-41(5-11-45(47)27-39)35-53-17-23-56(22-14-50-32-38)24-18-54-36-42-6-12-46-28-40(34-52-16-21-55)4-10-48(46)30-42;2-1(3,4)5;;/h1-12,25-30,49-54H,13-24,31-36H2;(H,2,3,4,5);;1H2/q;;+2;/p-2" inchikey="ZEYWCDNYJFKWNP-UHFFFAOYSA-L" height="200px" width="300px" float="none"> | ||
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====Investigation==== | ====Investigation==== | ||
{{#experimentlist:|form=Photocatalytic_CO2_conversion_experiments|name=photocatalytic CO2 conversion under different conditions|importFile=}} | |||
====Sacrificial electron donor==== | ====Sacrificial electron donor==== | ||
Revision as of 15:29, 16 May 2024
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
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 |
Investigation-Name: photocatalytic CO2 conversion under different conditions
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)
