Photocatalytic CO2 Reduction Using a Robust Multifunctional Iridium Complex toward the Selective Formation of Formic Acid: Difference between revisions

Latest revision as of 10:37, 11 April 2024

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]

[Ir(mesbpy-(PCy2)2)][BPh4]

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.	[Ir(mesbpy-(PCy2)2)][BPh4]	0.02	BIH	0.2	DMA			>400		470	15	2080

Investigation-Name: Photocatalytic reduction of CO2, best TON

	cat	cat conc [µM]	solvent A	additives	λexc [nm]	TON CO	TON H2	TON HCOOH
1.	[Ir(mesbpy-(PCy2)2)][BPh4]	0.02	DMA	Hg	>400	69	0.9	291
2.	[Ir(mesbpy-(PCy2)2)][BPh4]	0.02	DMA		>400	62	0.8	323
3.	[Ir(mesbpy-(PCy2)2)][BPh4]	0.02	DMA		>400	3.9	0.9	188
4.	[Ir(mesbpy-(PCy2)2)][BPh4]	0.02	DMA		>400	57	5	115

Investigation-Name: Control experiments

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)

DOI	10.1021/jacs.0c03097
Authors	Kenji Kamada, Jieun Jung, Taku Wakabayashi, Keita Sekizawa, Shunsuke Sato, Takeshi Morikawa, Shunichi Fukuzumi, Susumu Saito,
Submitted	27.05.2020
Published online	26.05.2020
Licenses	https://doi.org/10.15223/policy-029, https://doi.org/10.15223/policy-037, https://doi.org/10.15223/policy-045,
Subjects	Colloid and Surface Chemistry, Biochemistry, General Chemistry, Catalysis
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Photocatalytic CO2 Reduction Using a Robust Multifunctional Iridium Complex toward the Selective Formation of Formic Acid: Difference between revisions

Latest revision as of 10:37, 11 April 2024

Contents

Abstract[edit | edit source]

Summary[edit | edit source]

Advances and special progress[edit | edit source]

Additional remarks[edit | edit source]

Content of the published article in detail[edit | edit source]

Catalyst[edit | edit source]

Investigation[edit | edit source]

Sacrificial Electron Donor[edit | edit source]

Additives[edit | edit source]

Investigations

Topics

@@ Line 1: / Line 1: @@
-{{#doiinfobox: 10.1021/jacs.0c03097}}
+{{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====
+<chemform smiles="C(C1C(C)=CC(C)=CC=1C)1C=C2CP([Ir+3]([H-])([Cl-])34P(C5CCCCC5)(C5CCCCC5)CC5C=C(C6C(C)=CC(C)=CC=6C)C=C(C(C=1)=N23)N=54)(C1CCCCC1)C1CCCCC1.[B-](C1C=CC=CC=1)(C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1" inchi="1S/C54H74N2P2.C24H20B.ClH.Ir.H/c1-37-27-39(3)53(40(4)28-37)43-31-45(35-57(47-19-11-7-12-20-47)48-21-13-8-14-22-48)55-51(33-43)52-34-44(54-41(5)29-38(2)30-42(54)6)32-46(56-52)36-58(49-23-15-9-16-24-49)50-25-17-10-18-26-50;1-5-13-21(14-6-1)25(22-15-7-2-8-16-22,23-17-9-3-10-18-23)24-19-11-4-12-20-24;;;/h27-34,47-50H,7-26,35-36H2,1-6H3;1-20H;1H;;/q;-1;;+3;-1/p-1" inchikey="BEUJVGCRFICSDD-UHFFFAOYSA-M" height="200px" width="300px" float="none">
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+M  V30 44 C 10.4462 -3.91033 0.0 0
+M  V30 45 C 11.3323 -0.564267 0.0 0
+M  V30 46 C 7.98775 -1.4606 0.0 0
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+M  V30 51 C 2.16844 -7.60581 0.0 0
+M  V30 52 C 3.16843 -7.60581 0.0 0
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+M  V30 54 C 3.44365 -7.96453 0.0 0
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+M  V30 56 C 3.89195 -9.63754 0.0 0
+M  V30 57 C 4.85789 -9.3787 0.0 0
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+M  V30 59 Ir 6.15 -5.875 0.0 0 CHG=3
+M  V30 60 Cl 6.15 -6.875 0.0 0 CHG=-1
+M  V30 61 H 6.15 -4.875 0.0 0 CHG=-1
+M  V30 62 B 15.9 -5.15 0.0 0 CHG=-1
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+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__[[Category:Publication]]

Photocatalytic CO2 Reduction Using a Robust Multifunctional Iridium Complex toward the Selective Formation of Formic Acid: Difference between revisions

Latest revision as of 10:37, 11 April 2024

Abstract[edit | edit source]

Summary[edit | edit source]

Advances and special progress[edit | edit source]

Additional remarks[edit | edit source]

Content of the published article in detail[edit | edit source]

Catalyst[edit | edit source]

Investigation[edit | edit source]

Sacrificial Electron Donor[edit | edit source]

Additives[edit | edit source]

Investigations

Current site

Topics