Editing Photocatalytic CO2 Reduction Using a Robust Multifunctional Iridium Complex toward the Selective Formation of Formic Acid

{{DOI|doi=10.1021/jacs.0c03097}}
[[Category:Photocatalytic CO2 conversion to HCOOH]]
{{BaseTemplate}}
===Abstract===
====Summary====
A photochemical reduction of CO<sub>2</sub> to formic acid and CO was shown using the iridium complex {{#moleculelink:|link=BEUJVGCRFICSDD-UHFFFAOYSA-M|image=false|width=300|height=200}} 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 ====
The authors have developed a multifunctional catalyst that allows for selective generation of formic acid without the need for an external photosensitizer. 

====Additional remarks ====
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===
The article contains results for the reduction of CO<sub>2</sub> 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====
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  -INDIGO-05172314302D

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M  V30 END BOND
M  V30 END CTAB
M  END
</chemform>

====Investigation ====
{{#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====
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====
In this study, additional control experiments were conducted with Hg.
__FORCETOC__