Photochemical Reduction of Carbon Dioxide to Formic Acid using Ruthenium(II)-Based Catalysts and Visible Light: Difference between revisions

Latest revision as of 15:15, 5 July 2024

A photochemical reduction of CO₂ to formic acid was shown using a system containing an iridium-based photosensitizer, ruthenium photocatalyst and triethanolamine as the electron donor. Turnover numbers up to 526 and a selectivity of 80% towards formic acid were observed if the reaction was performed with [Ir(ppy)₂(bpy)]PF₆ ([Ir(ppy)2(bpy)][PF6]) as the photosensitizer and [Ru(bpy)₂(Cl)(CO)]PF₆ (100837) as the catalyst. The experiments were conducted under irradiation with Hg-lamp equipped with a λ=400–700 nm filter.

Advances and special progress[edit | edit source]

The employed photocatalytic system showed activity for the photoreduction of Na₂CO₃ to formic acid as well. A TON of 53 was observed after 5h reaction time.

Additional remarks[edit | edit source]

Experiments using different electron and proton donors such as triethylamine (TEA) and 1-benzyl-1,4-dihydronicotinamide (BNAH) were unsuccessful as the observed activities were lower than those obtained in the presence of TEOA.

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

The article contains results for the reduction of CO2 to formic under visible-light catalysis using ruthenium complexes as catalysts, the iridium complex [Ir(ppy)₂(bpy)]PF₆ ([Ir(ppy)2(bpy)][PF6]) as a photosensitizer and triethanolamine as the electron donor. The catalytic system performs best (referring to the TON of HCOOH production) with [Ru(bpy)₂(Cl)(CO)]PF₆ (100837) as photocatalyst.

Catalysts[edit | edit source]

Ru(bpy)2Cl2 Ru(bpy)2CO3 [Ru(bpy)2ClCO][PF6] [Ru(bpy)(H2O)(CO)][PF6] [Ru(bpy)(AcMe)2][PF6] [Ru(bpy)2HCO][PF6]

Photosensitizer[edit | edit source]

[Ir(ppy)2(bpy)][PF6]

Investigations[edit | edit source]

	cat	cat conc [µM]	PS	PS conc [mM]	e-D	solvent A	λexc [nm]	TON CO	TON H2	TON HCOOH
1.	Ru(bpy)2Cl2	25	[Ir(ppy)2(bpy)][PF6]	0.025	TEOA	NMP	400 - 700	1	2	13
2.	Ru(bpy)2CO3	25	[Ir(ppy)2(bpy)][PF6]	0.025	TEOA	NMP	400 - 700	2	4	21
3.	[Ru(bpy)2ClCO][PF6]	25	[Ir(ppy)2(bpy)][PF6]	0.025	TEOA	NMP	400 - 700	13	8	62
4.	[Ru(bpy)2HCO][PF6]	25	[Ir(ppy)2(bpy)][PF6]	0.025	TEOA	NMP	400 - 700	8	8	34
5.	[Ru(bpy)(H2O)(CO)][PF6]	25	[Ir(ppy)2(bpy)][PF6]	0.025	TEOA	NMP	400 - 700	7	9	40
6.	[Ru(bpy)(AcMe)2][PF6]	25	[Ir(ppy)2(bpy)][PF6]	0.025	TEOA	NMP	400 - 700	3	4	27

Investigation-Name: CO2 reduction experiments

	cat	cat conc [µM]	PS	PS conc [mM]	e-D	solvent A	λexc [nm]	TON CO	TON H2	TON HCOOH
1.	Ru(bpy)2Cl2	6.2	[Ir(ppy)2(bpy)][PF6]	0.025	TEOA	NMP	400 - 700	3	9	26
2.	Ru(bpy)2CO3	6.2	[Ir(ppy)2(bpy)][PF6]	0.025	TEOA	NMP	400 - 700	3	11	39
3.	[Ru(bpy)2ClCO][PF6]	6.2	[Ir(ppy)2(bpy)][PF6]	0.025	TEOA	NMP	400 - 700	19	19	117
4.	[Ru(bpy)2HCO][PF6]	6.2	[Ir(ppy)2(bpy)][PF6]	0.025	TEOA	NMP	400 - 700	21	16	107
5.	[Ru(bpy)(H2O)(CO)][PF6]	6.2	[Ir(ppy)2(bpy)][PF6]	0.025	TEOA	NMP	400 - 700	21	14	75
6.	[Ru(bpy)(AcMe)2][PF6]	6.2	[Ir(ppy)2(bpy)][PF6]	0.025	TEOA	NMP	400 - 700	4	12	64
7.	[Ru(bpy)2ClCO][PF6]	3.1	[Ir(ppy)2(bpy)][PF6]	0.025	TEOA	NMP	400 - 700	36	33	296
8.	[Ru(bpy)2HCO][PF6]	3.1	[Ir(ppy)2(bpy)][PF6]	0.025	TEOA	NMP	400 - 700	16	29	145
9.	[Ru(bpy)(H2O)(CO)][PF6]	3.1	[Ir(ppy)2(bpy)][PF6]	0.025	TEOA	NMP	400 - 700	34	28	211
10.	[Ru(bpy)2ClCO][PF6]	1.6	[Ir(ppy)2(bpy)][PF6]	0.025	TEOA	NMP	400 - 700	40	67	419
11.	[Ru(bpy)2HCO][PF6]	1.6	[Ir(ppy)2(bpy)][PF6]	0.025	TEOA	NMP	400 - 700	25	62	225
12.	[Ru(bpy)(H2O)(CO)][PF6]	1.6	[Ir(ppy)2(bpy)][PF6]	0.025	TEOA	NMP	400 - 700	45	65	335
13.	[Ru(bpy)(AcMe)2][PF6]	1.6	[Ir(ppy)2(bpy)][PF6]	0.025	TEOA	NMP	400 - 700	4	44	75

Investigation-Name: Optimization of concentrations

	analyte	reduction potential	solvent	electrolyte	WE	RE
1.	Ru(bpy)2Cl2	0,-2.11	MeCN	TBABF4	glassy carbon	Ag/AgNO3 in MeCN
2.	Ru(bpy)2CO3	0.45,-1.97	MeCN	TBABF4	glassy carbon	Ag/AgNO3 in MeCN
3.	[Ru(bpy)2ClCO][PF6]	1.22,-1.75	MeCN	TBABF4	glassy carbon	Ag/AgNO3 in MeCN
4.	[Ru(bpy)2HCO][PF6]	1.20,-1.61	MeCN	TBABF4	glassy carbon	Ag/AgNO3 in MeCN

Investigation-Name: Table 3 - CV

Sacrificial electron donor[edit | edit source]

In this study, the experiments were done with the sacrificial electron donor TEOA (100507).

Additives[edit | edit source]

No additives were used in the described experiments.

Investigations

CO2 reduction experiments (Molecular process, Photocatalytic CO2 conversion experiments)
Optimization of concentrations (Molecular process, Photocatalytic CO2 conversion experiments)
Table 1 (Molecular process, Photocatalytic CO2 conversion experiments)
Table 2 (Molecular process, Photocatalytic CO2 conversion experiments)
Table 3 - CV (Assay, Cyclic Voltammetry experiments)

DOI	10.1002/cctc.201500494
Authors	Alonso Rosas-Hernández, Henrik Junge, Matthias Beller,
Submitted	26.08.2015
Published online	26.08.2015
Licenses	http://doi.wiley.com/10.1002/tdm_license_1.1,
Subjects	Inorganic Chemistry, Organic Chemistry, Physical and Theoretical Chemistry, Catalysis
Go to literature page

Photochemical Reduction of Carbon Dioxide to Formic Acid using Ruthenium(II)-Based Catalysts and Visible Light: Difference between revisions

Latest revision as of 15:15, 5 July 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]

Catalysts[edit | edit source]

Photosensitizer[edit | edit source]

Investigations[edit | edit source]

Sacrificial electron donor[edit | edit source]

Additives[edit | edit source]

Investigations

Topics

@@ Line 1: / Line 1: @@
 {{BaseTemplate}}
 [[Category:Photocatalytic CO2 conversion to HCOOH]]
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 === Abstract ===
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 ==== Catalysts ====
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-M  V30 28 N 6.49763 -7.64818 0.0 0
+M  V30 28 O 10.8332 -6.8143 0.0 0 CHG=1
-M  V30 29 C 7.36359 -9.14733 0.0 0
+M  V30 29 H 10.8388 -5.07273 0.0 0
-M  V30 30 C 5.6333 -9.15464 0.0 0
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-M  V30 31 C 6.50308 -9.64824 0.0 0
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-M  V30 32 Ru 6.48118 -5.65053 0.0 0 CHG=2
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-M  V30 33 R# 7.4971 -4.94171 0.0 0 RGROUPS=(1 1)
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-M  V30 34 R# 7.4972 -6.22553 0.0 0 RGROUPS=(1 2)
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 M  V30 END ATOM
 M  V30 BEGIN BOND
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-M  V30 7 2 10 8
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-M  V30 12 1 13 11
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-M  V30 14 2 16 14
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 M  V30 END BOND
 M  V30 END CTAB
 M  END
-</chemform><chemform smiles="C1C=CN2[Ru+2]([*])([*])3(N4C=CC=CC=4C4C=CC=CN=43)N3=CC=CC=C3C=2C=1.F[P-](F)(F)(F)(F)F.F[P-](F)(F)(F)(F)F" inchikey="MVHJANUNBKMKDC-UHFFFAOYSA-N" inchi="1S/2C10H8N2.2C3H6O.2F6P.Ru/c2*1-3-7-11-9(5-1)10-6-2-4-8-12-10;2*1-3(2)4;2*1-7(2,3,4,5)6;/h2*1-8H;2*1-2H3;;;/q;;;;2*-1;+2" float="none" width="200" height="200" r1="H2O,CO(CH3)2" r2="CO,CO(CH3)2">
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+   -INDIGO-02262411282D
   0  0  0  0  0  0  0  0  0  0 V3000
 M  V30 BEGIN CTAB
-M  V30 COUNTS 41 44 0 0 0
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 M  V30 BEGIN ATOM
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-M  V30 2 P 13.633 -2.55 0.0 0 CHG=-1
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-M  V30 3 F 14.499 -3.05 0.0 0
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-M  V30 7 F 13.633 -3.55 0.0 0
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-M  V30 8 F 13.109 -6.375 0.0 0
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-M  V30 9 P 13.975 -5.875 0.0 0 CHG=-1
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-M  V30 20 C 4.87882 -4.92503 0.0 0
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-M  V30 21 C 6.60641 -2.92499 0.0 0
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-M  V30 22 C 7.47083 -1.42609 0.0 0
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-M  V30 23 C 6.60649 -1.92428 0.0 0
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-M  V30 24 C 8.33778 -1.92638 0.0 0
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-M  V30 25 N 7.47682 -3.42729 0.0 0
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-M  V30 26 C 8.3399 -2.92207 0.0 0
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-M  V30 29 C 4.85164 -5.87497 0.0 0
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-M  V30 30 C 5.71515 -7.37553 0.0 0
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-M  V30 31 C 3.98485 -7.38002 0.0 0
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-M  V30 32 C 4.85382 -7.87503 0.0 0
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-M  V30 33 C 6.58166 -7.8747 0.0 0
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-M  V30 34 C 8.31196 -7.87139 0.0 0
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-M  V30 35 N 7.44763 -7.37318 0.0 0
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-M  V30 37 C 6.5833 -8.87964 0.0 0
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-M  V30 38 C 7.45308 -9.37324 0.0 0
+M  V30 38 C 7.93643 -8.56485 0.0 0
-M  V30 39 R# 8.87596 -6.15 0.0 0 RGROUPS=(1 2)
+M  V30 39 Ru 7.90744 -5.10948 0.0 0 CHG=2
-M  V30 40 Ru 7.45618 -5.32553 0.0 0 CHG=2
+M  V30 40 O 9.27558 -4.15054 0.0 0
-M  V30 41 R# 8.88398 -4.525 0.0 0 RGROUPS=(1 1)
+M  V30 41 O 9.32346 -5.80948 0.0 0
+M  V30 42 C 10.1416 -3.65054 0.0 0
+M  V30 43 C 10.1416 -2.65054 0.0 0
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+M  V30 46 C 11.0555 -5.80948 0.0 0
+M  V30 47 C 10.1895 -7.30948 0.0 0
 M  V30 END ATOM
 M  V30 BEGIN BOND
@@ Line 337: / Line 447: @@
 M  V30 37 2 37 38
 M  V30 38 1 38 36
-M  V30 39 10 18 40
+M  V30 39 10 25 39
-M  V30 40 10 40 25
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-M  V30 41 10 40 28
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-M  V30 42 10 40 35
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-M  V30 43 10 40 39
+M  V30 43 10 39 40
-M  V30 44 10 40 41
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+M  V30 46 1 42 43
+M  V30 47 1 42 44
+M  V30 48 2 41 45
+M  V30 49 1 45 46
+M  V30 50 1 45 47
+M  V30 END BOND
+M  V30 END CTAB
+M  END
+</chemform><chemform smiles="C1C=CN2[Ru+2]([C-]#[O+])([H-])3(N4C=CC=CC=4C4C=CC=CN=43)N3=CC=CC=C3C=2C=1.F[P-](F)(F)(F)(F)F" inchi="1S/2C10H8N2.CO.F6P.Ru.H/c2*1-3-7-11-9(5-1)10-6-2-4-8-12-10;1-2;1-7(2,3,4,5)6;;/h2*1-8H;;;;/q;;;-1;+2;-1" inchikey="HJTHNVDYVJWKQG-UHFFFAOYSA-N" height="200px" width="300px" float="none">
+  -INDIGO-02262411182D
+  0  0  0  0  0  0  0  0  0  0 V3000
+M  V30 BEGIN CTAB
+M  V30 COUNTS 35 39 0 0 0
+M  V30 BEGIN ATOM
+M  V30 1 C 4.57242 -3.91012 0.0 0
+M  V30 2 C 6.0439 -3.90972 0.0 0
+M  V30 3 C 5.30956 -3.48483 0.0 0
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+M  V30 6 C 5.31141 -5.18573 0.0 0
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+M  V30 24 C 7.54314 -8.98985 0.0 0
+M  V30 25 Ru 7.51415 -5.53448 0.0 0 CHG=2
+M  V30 26 H 8.88229 -4.57554 0.0 0 CHG=-1
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+M  V30 35 F 11.3758 -4.5673 0.0 0
+M  V30 END ATOM
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+M  V30 1 2 3 1
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+M  V30 39 1 30 35
 M  V30 END BOND
 M  V30 END CTAB
@@ Line 459: / Line 661: @@
 ==== Investigations ====
-{{#experimentlist:|form=Photocatalytic_CO2_conversion_experiments|name=Table 1}}
+{{#experimentlist: |form=Photocatalytic_CO2_conversion_experiments|name=CO2 reduction experiments}}
-{{#experimentlist:|form=Photocatalytic_CO2_conversion_experiments|name=Table 2}}
+{{#experimentlist: |form=Photocatalytic_CO2_conversion_experiments|name=Optimization of concentrations}}
 {{#experimentlist:|form=Cyclic_Voltammetry_experiments|name=Table 3 - CV}}
@@ Line 469: / Line 671: @@
 ==== Additives ====
-No additives were used in the described experiments.
+No additives were used in the described experiments.[[Category:Publication]]

Photochemical Reduction of Carbon Dioxide to Formic Acid using Ruthenium(II)-Based Catalysts and Visible Light: Difference between revisions

Latest revision as of 15:15, 5 July 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]

Catalysts[edit | edit source]

Photosensitizer[edit | edit source]

Investigations[edit | edit source]

Sacrificial electron donor[edit | edit source]

Additives[edit | edit source]

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