Exchange Coupling Determines Metal-Dependent Efficiency for Iron- and Cobalt-Catalyzed Photochemical CO2 Reduction: Difference between revisions

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=== Investigation ===
=== Investigation ===
{{#experimentlist:|form=Photocatalytic_CO2_conversion_experiments|name=Iron-Catalyzed Photochemical CO2 Reduction under diverse conditions_error|importFile=Exchange Coupling Determines Metal-Dependent Efficiency for Iron- and Cobalt-Catalyzed Photochemical CO2 Reduction.xlsx}}  
{{#experimentlist:|form=Photocatalytic_CO2_conversion_experiments|name=Iron-Catalyzed Photochemical CO2 Reduction under diverse conditions_error|importFile=Exchange Coupling Determines Metal-Dependent Efficiency for Iron- and Cobalt-Catalyzed Photochemical CO2 Reduction.xlsx}}
 
{{#experimentlist:|form=Photocatalytic_CO2_conversion_experiments|name=CO2 Reduction under diverse conditions with diverse sensitizers|importFile=Exchange Coupling Determines Metal-Dependent Efficiency for Iron- and Cobalt-Catalyzed Photochemical CO2 Reduction_2.xlsx}}
 


===Further Information===
===Further Information===

Revision as of 12:28, 17 November 2024


Abstract

Summary

A photochemical reduction of CO2 to CO was shown using an Fe2+ and Co2+ complexes as catalysts in combination with Ruxx as photosensitizer.

metal−ligand exchange coupling as an example of charge delocalization that can determine the efficiency for photocatalytic CO2RR. A comparative evaluation of iron and cobalt complexes supported by the redox-active ligand tpyPY2Me establishes that the two-electron reduction of [Co(tpyPY2Me)]2+ ([Co]2+) occurs at potentials 770 mV more negative than the [Fe(tpyPY2Me)]2+ ([Fe]2+) analogue by maximizing the exchange coupling in the latter compound.

Advances and special progress

Additional remarks

Content of the published article in detail

Catalysts tested in this study

100968 100969

Photosensitizer

Ru(bpy)3 3,6-Diamino-10-methylacridinium 100971 Ir(ppy)3

Investigation

catcat conc [µM]PSPS conc [mM]e-De-D conc [M]..solvent Aadditives..TON COTON H2..
1.

Molecule:100968

2

Ru(bpy)3

0.2

BIH

0.1

MeCN

1552086
2.

Molecule:100968

0.2

Ru(bpy)3

0.2

BIH

0.1

MeCN

303491013
3.


Ru(bpy)3

0.2

BIH

0.1

MeCN

4352
4.

Molecule:100968

2


BIH

0.1

MeCN

1120
5.

Molecule:100968

2

Ru(bpy)3

0.2


MeCN

1500
6.

Molecule:100968

2

Ru(bpy)3

0.2

BIH

0.1

MeCN

60
7.

Molecule:100968

2

Ru(bpy)3

0.2

BIH

0.1

MeCN

Ar0222
8.

Molecule:100968

2

Molecule:100971

0.2

BIH

0.1

MeCN

12749163
9.

Molecule:100968

0.2

Molecule:100971

0.2

BIH

0.1

MeCN

287126527
10.

Molecule:100968

2

Ir(ppy)3

0.2

BIH

0.1

MeCN

18502141
11.

Molecule:100968

2

Molecule:100970

0.2

BIH

0.1

MeCN

67100
catcat conc [µM]PSPS conc [mM]e-De-D conc [M]..solvent Aadditives..TON COTON H2..
1.

Molecule:100968

2

Ru(bpy)3

0.2

BIH

0.1

MeCN

1552086
2.

Molecule:100968

0.2

Ru(bpy)3

0.2

BIH

0.1

MeCN

303491013
3.


Ru(bpy)3

0.2

BIH

0.1

MeCN

4352
4.

Molecule:100968

2


BIH

0.1

MeCN

1120
5.

Molecule:100968

2

Ru(bpy)3

0.2


MeCN

1500
6.

Molecule:100968

2

Ru(bpy)3

0.2

BIH

0.1

MeCN

60
7.

Molecule:100968

2

Ru(bpy)3

0.2

BIH

0.1

MeCN

Ar0222
8.

Molecule:100968

2

Molecule:100971

0.2

BIH

0.1

MeCN

12749163
9.

Molecule:100968

0.2

Molecule:100971

0.2

BIH

0.1

MeCN

287126527
10.

Molecule:100968

2

Ir(ppy)3

0.2

BIH

0.1

MeCN

18502141
11.

Molecule:100968

2

Molecule:100970

0.2

BIH

0.1

MeCN

67100


Further Information

The Supporting Information gives quantum yields for described experiments in Table 1.

Sacrificial electron donor

In this study, the experiments were done with the sacrificial electron donor BIH (100508).

Additives

Investigations

Tags

TagContains tags that describe the content of the page.: photocatalytic CO2 reduction (Ontology: voc4cat, OBOID: voc4cat:0000099), TagContains tags that describe the content of the page.: CO