Photocatalytic CO2 Reduction Using a Robust Multifunctional Iridium Complex toward the Selective Formation of Formic Acid: Difference between revisions
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{{ | {{DOI|doi=10.1021/jacs.0c03097}} | ||
[[Category:Photocatalytic CO2 conversion to HCOOH]] | [[Category:Photocatalytic CO2 conversion to HCOOH]] | ||
{{BaseTemplate}} | {{BaseTemplate}} | ||
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====Investigation ==== | ====Investigation ==== | ||
{{#experimentlist:|form=Photocatalytic_CO2_conversion_experiments|name= | {{#experimentlist: |form=Photocatalytic_CO2_conversion_experiments|name=Photocatalytic reduction of CO2, best TON}} | ||
{{#experimentlist:|form=Photocatalytic_CO2_conversion_experiments|name=Control experiments|importFile=}} | |||
====Sacrificial Electron Donor==== | ====Sacrificial Electron Donor==== | ||
In this study, the experiments were done with the sacrificial electron donor BIH ({{#moleculelink:|link=VDFIVJSRRJXMAU-UHFFFAOYSA-N|image=false|width=300|height=200}}). | In this study, the experiments were done with the sacrificial electron donor BIH ({{#moleculelink:|link=VDFIVJSRRJXMAU-UHFFFAOYSA-N|image=false|width=300|height=200}}), water ({{#moleculelink:|link=XLYOFNOQVPJJNP-UHFFFAOYSA-N|image=false|width=300|height=200}}) and triethanolamine ({{#moleculelink:|link=GSEJCLTVZPLZKY-UHFFFAOYSA-N|image=false|width=300|height=200}}). | ||
====Additives==== | ====Additives==== | ||
In this study, additional control experiments were conducted with Hg. | In this study, additional control experiments were conducted with Hg. | ||
__FORCETOC__ | __FORCETOC__[[Category:Publication]] | ||
Latest revision as of 10:37, 11 April 2024
Abstract[edit | edit source]
Summary[edit | edit source]
A photochemical reduction of CO2 to formic acid and CO was shown using the iridium complex [Ir(mesbpy-(PCy2)2)][BPh4] as a catalyst without any additional photosensitizer. Turnover numbers (TONs) of 2080 and a selectivity of 87% for formic acid were reached in dimethylacetamide/water. The experiments were conducted under visible-light irradiation (λ > 400 nm) using BIH as sacrificial electron donor (see section SEDs below).
Advances and special progress[edit | edit source]
The authors have developed a multifunctional catalyst that allows for selective generation of formic acid without the need for an external photosensitizer.
Additional remarks[edit | edit source]
The developed catalyst reduces CO2 to CO via inner-sphere catalysis and to formic acid via outer-sphere catalysis.
Content of the published article in detail[edit | edit source]
The article contains results for the reduction of CO2 to CO and formic acid under visible-light catalysis using an iridium complex. The catalytic system performs best (referring to the TON of formic acid production) in dimethylacetamide/water.
Catalyst[edit | edit source]
Investigation[edit | edit source]
| cat | cat conc [µM] | e-D | e-D conc [M] | solvent A | . | . | λexc [nm] | . | TON CO | TON H2 | TON HCOOH | . | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | 0.02 | 0.2 | >400 | 470 | 15 | 2080 |
| cat | cat conc [µM] | solvent A | . | . | . | additives | . | . | . | λexc [nm] | . | TON CO | TON H2 | TON HCOOH | . | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | 0.02 | Hg | >400 | 69 | 0.9 | 291 | ||||||||||
| 2. | 0.02 | >400 | 62 | 0.8 | 323 | |||||||||||
| 3. | 0.02 | >400 | 3.9 | 0.9 | 188 | |||||||||||
| 4. | 0.02 | >400 | 57 | 5 | 115 |
Sacrificial Electron Donor[edit | edit source]
In this study, the experiments were done with the sacrificial electron donor BIH (BIH), water (H2O) and triethanolamine (TEOA).
Additives[edit | edit source]
In this study, additional control experiments were conducted with Hg.
Investigations
- Control experiments (Molecular process, Photocatalytic CO2 conversion experiments)
- Photocatalytic reduction of CO2, best TON (Molecular process, Photocatalytic CO2 conversion experiments)
