Visible light driven reduction of CO2 catalyzed by an abundant manganese catalyst with zinc porphyrin photosensitizer: Difference between revisions
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==== Summary ==== | ==== Summary ==== | ||
A photochemical reduction of CO<sub>2</sub> was shown using the manganese catalyst {{#moleculelink:|link=ZUZWBGQHMPVNDY-UHFFFAOYSA-M|image=false|width=300|height=200}} and the zinc photosensitizer {{#moleculelink:|link=XPVVGUHKLPZAEN-DAJBKUBHSA-N|image=false|width=300|height=200}}. Turnover numbers (TONs) of 64 and 16 were reached after 180 min of irradiation for CO and formic acid, respectively. The experiments were performed using a Xenon lamp as the light source. | A photochemical reduction of CO<sub>2</sub> was shown using the manganese catalyst {{#moleculelink: |link=ZUZWBGQHMPVNDY-UHFFFAOYSA-M|image=false|width=300|height=200}} and the zinc photosensitizer {{#moleculelink:|link=XPVVGUHKLPZAEN-DAJBKUBHSA-N|image=false|width=300|height=200}}. Turnover numbers (TONs) of 64 and 16 were reached after 180 min of irradiation for CO and formic acid, respectively. The experiments were performed using a Xenon lamp as the light source. | ||
==== Advances and special progress ==== | ==== Advances and special progress ==== | ||
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==== Catalyst==== | ==== Catalyst==== | ||
<chemform smiles=" | <chemform smiles="[O+]#[C-]~[Mn+]1(~[Br-])(~[C-]#[O+])(~[C-]#[O+])~n2ccccc2-c2ccccn~12" inchikey="ZUZWBGQHMPVNDY-UHFFFAOYSA-M" inchi="InChI=1S/C10H8N2.3CO.BrH.Mn/c1-3-7-11-9(5-1)10-6-2-4-8-12-10;3*1-2;;/h1-8H;;;;1H;/q;;;;;+1/p-1" float="none" width="200" height="200"> | ||
RDKit 2D | |||
0 0 0 0 0 0 0 0 0 | 0 0 0 0 0 0 0 0 0 0999 V3000 | ||
M V30 BEGIN CTAB | M V30 BEGIN CTAB | ||
M V30 COUNTS 20 22 0 0 0 | M V30 COUNTS 20 22 0 0 0 | ||
M V30 BEGIN ATOM | M V30 BEGIN ATOM | ||
M V30 1 C | M V30 1 C 4.75985 -3.47507 0 0 | ||
M V30 2 C 6. | M V30 2 C 6.49015 -3.47459 0 0 | ||
M V30 3 C | M V30 3 C 5.62664 -2.97497 0 0 | ||
M V30 4 N 6. | M V30 4 N 6.49015 -4.47553 0 0 | ||
M V30 5 C | M V30 5 C 4.75985 -4.48002 0 0 | ||
M V30 6 C | M V30 6 C 5.62882 -4.97503 0 0 | ||
M V30 7 C | M V30 7 C 4.75985 -6.42507 0 0 | ||
M V30 8 | M V30 8 N 6.49015 -6.42459 0 0 | ||
M V30 9 | M V30 9 C 5.62664 -5.92497 0 0 | ||
M V30 10 C 6. | M V30 10 C 6.49015 -7.42553 0 0 | ||
M V30 11 C | M V30 11 C 4.75985 -7.43002 0 0 | ||
M V30 12 C 5. | M V30 12 C 5.62882 -7.92503 0 0 | ||
M V30 13 Mn 7. | M V30 13 Mn 7.55 -5.475 0 0 CHG=1 | ||
M V30 14 C | M V30 14 C 8.41603 -4.975 0 0 CHG=-1 | ||
M V30 15 C 8. | M V30 15 C 8.41603 -5.975 0 0 CHG=-1 | ||
M V30 16 C | M V30 16 C 7.55 -6.475 0 0 CHG=-1 | ||
M V30 17 | M V30 17 O 7.55 -7.475 0 0 CHG=1 | ||
M V30 18 O | M V30 18 O 9.28205 -6.475 0 0 CHG=1 | ||
M V30 19 O 9. | M V30 19 O 9.28205 -4.475 0 0 CHG=1 | ||
M V30 20 | M V30 20 Br 7.525 -3.3 0 0 CHG=-1 | ||
M V30 END ATOM | M V30 END ATOM | ||
M V30 BEGIN BOND | M V30 BEGIN BOND | ||
M V30 1 | M V30 1 4 3 1 | ||
M V30 2 | M V30 2 4 4 2 | ||
M V30 3 | M V30 3 4 1 5 | ||
M V30 4 | M V30 4 4 2 3 | ||
M V30 5 | M V30 5 4 5 6 | ||
M V30 6 | M V30 6 4 6 4 | ||
M V30 7 | M V30 7 4 9 7 | ||
M V30 8 | M V30 8 4 10 8 | ||
M V30 9 | M V30 9 4 7 11 | ||
M V30 10 | M V30 10 4 8 9 | ||
M V30 11 | M V30 11 4 11 12 | ||
M V30 12 | M V30 12 4 12 10 | ||
M V30 13 1 | M V30 13 1 6 9 | ||
M V30 14 10 4 13 | M V30 14 10 4 13 | ||
M V30 15 10 | M V30 15 10 8 13 | ||
M V30 16 10 13 14 | M V30 16 10 13 14 | ||
M V30 17 10 13 15 | M V30 17 10 13 15 | ||
M V30 18 10 13 16 | M V30 18 10 13 16 | ||
M V30 19 | M V30 19 3 16 17 | ||
M V30 20 3 | M V30 20 3 15 18 | ||
M V30 21 3 | M V30 21 3 14 19 | ||
M V30 22 | M V30 22 10 13 20 | ||
M V30 END BOND | M V30 END BOND | ||
M V30 END CTAB | M V30 END CTAB | ||
Revision as of 18:31, 13 March 2025
Abstract
Summary
A photochemical reduction of CO2 was shown using the manganese catalyst Mn(bpy)(CO)3Br and the zinc photosensitizer ZnTPP. Turnover numbers (TONs) of 64 and 16 were reached after 180 min of irradiation for CO and formic acid, respectively. The experiments were performed using a Xenon lamp as the light source.
Advances and special progress
Photochemical CO2 conversion in an environmentally friendly and sustainable photocatalytic system using earth abundant metal complexes efficiently yielded CO and HCOOH in aqueous acetonitrile solution.
Additional remarks
The manganese catalyst and the zinc photosensitizer were used in different ratios, resulting in different TONs for CO and HCOOH production.
Content of the published article in detail
The article contains results for the reduction of CO2 to CO and HCOOH using different ratios of the catalyst and photosensitizer. The catalytic system performed best (referring to the TONs of CO and HCOOH production) for the catalyst:photosensitizer ratio of 4:1.
Catalyst
Photosensitizer
Investigation
| cat | cat conc [µM] | PS | PS conc [mM] | e-D | e-D conc [M] | solvent A | . | . | λexc [nm] | . | TON CO | TON HCOOH | . | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | 2000 | 0.5 | 0.1 | xenon lamp | 119 | 19 | ||||||||
| 2. | 1500 | 0.5 | 0.1 | xenon lamp | 97 | 18 | ||||||||
| 3. | 500 | 0.25 | 0.1 | xenon lamp | 64 | 16 | ||||||||
| 4. | 500 | 0.5 | 0.1 | xenon lamp | 12 | 10 | ||||||||
| 5. | 500 | 1 | 0.1 | xenon lamp | 8 | 6 | ||||||||
| 6. | 500 | 0.1 | xenon lamp | 2 | 1 | |||||||||
| 7. | 0.5 | 0.1 | xenon lamp |
Investigation-Name: Table 1
Sacrificial electron donor
In this study, triethylamine (TEA) was used as sacrificial electron donor.
Additives
In this study, no additives were used.
Investigations
- Table 1 (Molecular process, Photocatalytic CO2 conversion experiments)
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