Water-Assisted Highly Efficient Photocatalytic Reduction of CO2 to CO with Noble Metal-Free Bis(terpyridine)iron(II) Complexes and an Organic Photosensitizer: 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 iron | A photochemical reduction of CO<sub>2</sub> to CO was shown using the iron complexes {{#moleculelink: |link=LMRSZYQWVOHHQK-UHFFFAOYSA-L|image=false|width=300|height=200}}, {{#moleculelink: |link=ZTTZZWAWKFXODG-UHFFFAOYSA-M|image=false|width=300|height=200}} and {{#moleculelink: |link=PEYMXLIPERCYGF-UHFFFAOYSA-M|image=false|width=300|height=200}} as catalysts in combination with the organic photosensitizer {{#moleculelink:|link=PRWATGACIORDEL-UHFFFAOYSA-N|image=false|width=300|height=200}}. Turnover numbers (TONs) of 6320 and a selectivity of 99.4% for CO were reached in DMF/H<sub>2</sub>O with catalyst {{#moleculelink: |link=PEYMXLIPERCYGF-UHFFFAOYSA-M|image=false|width=300|height=200}}. 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==== | ====Advances and special progress==== | ||
One of the highest TONs for CO<sub>2</sub> reduction with an organic thermally activated delayed fluorescence (TADF) compound as a photosensitizer was reported herein. | |||
====Additional remarks==== | ====Additional remarks==== | ||
The addition of water was found to strongly promote the catalytic reaction. | |||
===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 the iron complex | The article contains results for the reduction of CO<sub>2</sub> to CO under visible-light catalysis using the iron complex {{#moleculelink: |link=PEYMXLIPERCYGF-UHFFFAOYSA-M|image=false|width=300|height=200}} as a catalyst. The catalytic system performs best (referring to the TON of CO production) in DMF/H<sub>2</sub>O. | ||
====Catalyst==== | ====Catalyst==== | ||
<chemform smiles="C1C=CN2~[Fe]34(~N5C=CC=CC=5C5N~3=C(C=C(C3C=CC([*])=CC=3)C=5)C3C=CC=CN=3~4)3~N4=CC=CC=C4C4C=C(C5C=CC([*])=CC=5)C=C(N=4~3)C=2C=1" inchi="" inchikey="" height="200px" width="300px" float="none" r1="H,Cl,NMe2"> | <chemform smiles="C1C=CN2~[Fe]34(~N5C=CC=CC=5C5N~3=C(C=C(C3C=CC([*])=CC=3)C=5)C3C=CC=CN=3~4)3~N4=CC=CC=C4C4C=C(C5C=CC([*])=CC=5)C=C(N=4~3)C=2C=1" inchi="" inchikey="" height="200px" width="300px" float="none" r1="H,Cl,NMe2"> | ||
| Line 139: | Line 143: | ||
<chemform smiles="" inchi="" inchikey="PRWATGACIORDEL-UHFFFAOYSA-N" height="200px" width="300px" float="none"></chemform> | <chemform smiles="" inchi="" inchikey="PRWATGACIORDEL-UHFFFAOYSA-N" height="200px" width="300px" float="none"></chemform> | ||
====Investigation==== | ====Investigation==== | ||
{{#experimentlist:|form=Photocatalytic_CO2_conversion_experiments|name=photocatalytic CO2 conversion|importFile=}} | |||
====Sacrificial electron donor==== | ====Sacrificial electron donor==== | ||
In this study, the experiments were done with the sacrificial electron donor TEA ({{#moleculelink:|link=ZMANZCXQSJIPKH-UHFFFAOYSA-N|image=false|width=300|height=200}}). | In this study, the experiments were done with the sacrificial electron donor TEA ({{#moleculelink:|link=ZMANZCXQSJIPKH-UHFFFAOYSA-N|image=false|width=300|height=200}}). | ||
====Additives==== | ====Additives==== | ||
In this study, no additives were tested. | In this study, no additives were tested. | ||
Latest revision as of 15:14, 10 January 2025
Abstract[edit | edit source]
Summary[edit | edit source]
A photochemical reduction of CO2 to CO was shown using the iron complexes Molecule with key LMRSZYQWVOHHQK-UHFFFAOYSA-L does not exist., Molecule with key ZTTZZWAWKFXODG-UHFFFAOYSA-M does not exist. and Molecule with key PEYMXLIPERCYGF-UHFFFAOYSA-M does not exist. 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 Molecule with key PEYMXLIPERCYGF-UHFFFAOYSA-M does not exist.. 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[edit | edit source]
One of the highest TONs for CO2 reduction with an organic thermally activated delayed fluorescence (TADF) compound as a photosensitizer was reported herein.
Additional remarks[edit | edit source]
The addition of water was found to strongly promote the catalytic reaction.
Content of the published article in detail[edit | edit source]
The article contains results for the reduction of CO2 to CO under visible-light catalysis using the iron complex Molecule with key PEYMXLIPERCYGF-UHFFFAOYSA-M does not exist. as a catalyst. The catalytic system performs best (referring to the TON of CO production) in DMF/H2O.
Catalyst[edit | edit source]
Photosensitizer[edit | edit source]
Investigation[edit | edit source]
| cat | cat conc [µM] | PS | PS conc [mM] | e-D | e-D conc [M] | solvent A | . | . | . | λexc [nm] | . | TON CO | . | . | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | 0.01 | 0.05 | 0.28 | 420-650 | 6320 | ||||||||||
| 2. | 0.01 | 0.05 | 0.28 | 420-650 | 2780 | ||||||||||
| 3. | 0.01 | 0.05 | 0.28 | 420-650 | 4500 | ||||||||||
| 4. | 0.01 | 0.05 | 0.28 | 420-650 | 19 | ||||||||||
| 5. | 0.01 | 0.05 | 0.28 | 420-650 | 992 |
Sacrificial electron donor[edit | edit source]
In this study, the experiments were done with the sacrificial electron donor TEA (TEA).
Additives[edit | edit source]
In this study, no additives were tested.
Investigations
- photocatalytic CO2 conversion (Molecular process, Photocatalytic CO2 conversion experiments)
