Metal-free reduction of CO2 to formate using a photochemical organohydride-catalyst recycling strategy: Difference between revisions
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[[Category:Photocatalytic CO2 conversion to CH4]][[Category:Publication]] | [[Category:Photocatalytic CO2 conversion to CH4]][[Category:Publication]] | ||
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===Abstract=== | |||
====Summary==== | |||
A photochemical reduction of CO<sub>2</sub> to CO was shown using the iron complexes {{#moleculelink: |link=VCSOHGDMTDAXCJ-UHFFFAOYSA-N|image=false|width=300|height=200}}, {{#moleculelink: |link=GNLSTNFUDXOKCD-UHFFFAOYSA-N|image=false|width=300|height=200}} and {{#moleculelink: |link=DJDQCCRAAYOAPK-UHFFFAOYSA-N|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=DJDQCCRAAYOAPK-UHFFFAOYSA-N|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==== | |||
====Additional remarks==== | |||
===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 {{#moleculelink: |link=DJDQCCRAAYOAPK-UHFFFAOYSA-N|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==== | |||
====Photosensitizer==== | |||
<chemform smiles="N(C1C=CC=CC=1)1C2C=CC(N(C)C)=CC=2C2C=C(N(C)C)C=CC1=2" inchi="1S/C22H23N3/c1-23(2)17-10-12-21-19(14-17)20-15-18(24(3)4)11-13-22(20)25(21)16-8-6-5-7-9-16/h5-15H,1-4H3" inchikey="SEAGXMGVRJVEBS-UHFFFAOYSA-N" height="200px" width="300px" float="none"> | |||
-INDIGO-05152410182D | |||
0 0 0 0 0 0 0 0 0 0 0 V3000 | |||
M V30 BEGIN CTAB | |||
M V30 COUNTS 25 28 0 0 0 | |||
M V30 BEGIN ATOM | |||
M V30 1 N 8.02505 -4.55495 0.0 0 | |||
M V30 2 C 8.52544 -6.09505 0.0 0 | |||
M V30 3 C 8.83468 -5.14881 0.0 0 | |||
M V30 4 C 7.52466 -6.09505 0.0 0 | |||
M V30 5 C 7.21532 -5.14881 0.0 0 | |||
M V30 6 C 6.86144 -6.83335 0.0 0 | |||
M V30 7 C 5.88703 -6.62837 0.0 0 | |||
M V30 8 C 6.23701 -4.94301 0.0 0 | |||
M V30 9 C 5.57716 -5.68757 0.0 0 | |||
M V30 10 C 9.80589 -4.94476 0.0 0 | |||
M V30 11 C 10.4711 -5.68567 0.0 0 | |||
M V30 12 C 9.19331 -6.83891 0.0 0 | |||
M V30 13 C 10.1655 -6.62782 0.0 0 | |||
M V30 14 C 8.05037 -1.77579 0.0 0 | |||
M V30 15 C 8.91594 -3.27404 0.0 0 | |||
M V30 16 C 8.91687 -2.2764 0.0 0 | |||
M V30 17 C 8.0491 -3.77451 0.0 0 | |||
M V30 18 C 7.18006 -2.27827 0.0 0 | |||
M V30 19 C 7.18586 -3.27833 0.0 0 | |||
M V30 20 N 10.8364 -7.36933 0.0 0 | |||
M V30 21 N 5.22017 -7.37355 0.0 0 | |||
M V30 22 C 4.24139 -7.16863 0.0 0 | |||
M V30 23 C 5.53209 -8.32366 0.0 0 | |||
M V30 24 C 10.5297 -8.32114 0.0 0 | |||
M V30 25 C 11.8141 -7.15904 0.0 0 | |||
M V30 END ATOM | |||
M V30 BEGIN BOND | |||
M V30 1 1 1 5 | |||
M V30 2 2 2 3 | |||
M V30 3 1 3 1 | |||
M V30 4 1 4 2 | |||
M V30 5 2 5 4 | |||
M V30 6 2 7 6 | |||
M V30 7 1 5 8 | |||
M V30 8 1 6 4 | |||
M V30 9 2 8 9 | |||
M V30 10 1 9 7 | |||
M V30 11 2 11 10 | |||
M V30 12 1 2 12 | |||
M V30 13 1 10 3 | |||
M V30 14 2 12 13 | |||
M V30 15 1 13 11 | |||
M V30 16 2 16 14 | |||
M V30 17 2 17 15 | |||
M V30 18 1 14 18 | |||
M V30 19 1 15 16 | |||
M V30 20 2 18 19 | |||
M V30 21 1 19 17 | |||
M V30 22 1 1 17 | |||
M V30 23 1 13 20 | |||
M V30 24 1 7 21 | |||
M V30 25 1 21 22 | |||
M V30 26 1 21 23 | |||
M V30 27 1 20 24 | |||
M V30 28 1 20 25 | |||
M V30 END BOND | |||
M V30 END CTAB | |||
M END | |||
</chemform> | |||
====Investigation==== | |||
====Sacrificial electron donor==== | |||
In this study, the experiments were done with the sacrificial electron donor ascorbic acid {{#moleculelink:|link=PPASLZSBLFJQEF-UHFFFAOYSA-M|image=false|width=300|height=200}}. The use of BIH was tested, but found to yield worse results. | |||
====Additives==== | |||
In this study, | |||
Revision as of 09:18, 15 May 2024
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)
