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

From ChemWiki
publication
About
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
m (auto-generated)
No edit summary
 
(31 intermediate revisions by 5 users not shown)
Line 1: Line 1:
{{BaseTemplate}}
{{BaseTemplate}}
[[Category:Photocatalytic CO2 conversion to HCOOH]]
[[Category:Photocatalytic CO2 conversion to HCOOH]]
{{#doiinfobox: 10.1002/cctc.201500494 }}{{MissingInvestigation}}{{FaultyMolecule}}
{{DOI|doi=10.1002/cctc.201500494 }}
 
=== Abstract ===
=== Abstract ===


==== Summary ====
==== Summary ====
A photochemical reduction of CO<sub>2</sub> 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)<sub>2</sub>(bpy)]PF<sub>6</sub> {{#moleculelink:|link=RJJGJTKSOSSNNL-UHFFFAOYSA-N|image=false|width=300|height=200}} as the photosensitizer and [Ru(bpy)<sub>2</sub>(Cl)(CO)]PF<sub>6</sub> as the catalyst.  The experiments were conducted under irradiation with Hg-lamp equipped with a ''λ''=400–700 nm filter.
A photochemical reduction of CO<sub>2</sub> 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)<sub>2</sub>(bpy)]PF<sub>6</sub> ({{#moleculelink:|link=RJJGJTKSOSSNNL-UHFFFAOYSA-N|image=false|width=300|height=200}}) as the photosensitizer and [Ru(bpy)<sub>2</sub>(Cl)(CO)]PF<sub>6</sub> ({{#moleculelink: |link=WUXWMOMXGWJDBM-UHFFFAOYSA-M|image=false|width=300|height=200}}) as the catalyst.  The experiments were conducted under irradiation with Hg-lamp equipped with a ''λ''=400–700 nm filter.


==== Advances and special progress ====
==== Advances and special progress ====
Line 15: Line 14:


=== Content of the published article in detail ===
=== Content of the published article in detail ===
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)<sub>2</sub>(bpy)]PF<sub>6</sub> {{#moleculelink:|link=RJJGJTKSOSSNNL-UHFFFAOYSA-N|image=false|width=300|height=200}} as a photosensitizer and triethanolamine as the electron donor. The catalytic system performs best (referring to the TON of HCOOH production) with [Ru(bpy)<sub>2</sub>(Cl)(CO)]PF<sub>6</sub> as photocatalyst.
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)<sub>2</sub>(bpy)]PF<sub>6</sub> ({{#moleculelink:|link=RJJGJTKSOSSNNL-UHFFFAOYSA-N|image=false|width=300|height=200}}) as a photosensitizer and triethanolamine as the electron donor. The catalytic system performs best (referring to the TON of HCOOH production) with [Ru(bpy)<sub>2</sub>(Cl)(CO)]PF<sub>6</sub> ({{#moleculelink: |link=WUXWMOMXGWJDBM-UHFFFAOYSA-M|image=false|width=300|height=200}}) as photocatalyst.


==== Catalysts ====
==== Catalysts ====
<chemform smiles="C1C=CN2~[Ru+2](~[Cl-])(~[Cl-])3(~N4C=CC=CC=4C4N~3=CC=CC=4)~N3C=CC=CC=3C=2C=1" inchikey="MGAJEYXQYJBLQL-UHFFFAOYSA-L" inchi="1S/2C10H8N2.2ClH.Ru/c2*1-3-7-11-9(5-1)10-6-2-4-8-12-10;;;/h2*1-8H;2*1H;/q;;;;+2/p-2" float="none" width="200" height="200" r1="Cl,Cl,H" r2="Cl,CO,CO">
<chemform smiles="C1C=CN2[Ru+2]([Cl-])([Cl-])3(N4C=CC=CC=4C4C=CC=CN=43)N3=CC=CC=C3C=2C=1" inchi="1S/2C10H8N2.2ClH.Ru/c2*1-3-7-11-9(5-1)10-6-2-4-8-12-10;;;/h2*1-8H;2*1H;/q;;;;+2/p-2" inchikey="MGAJEYXQYJBLQL-UHFFFAOYSA-L" height="200px" width="300px" float="none">
   -INDIGO-01092415422D
   -INDIGO-01122412122D


   0  0  0  0  0  0  0  0  0  0  0 V3000
   0  0  0  0  0  0  0  0  0  0  0 V3000
Line 25: Line 24:
M  V30 COUNTS 27 32 0 0 0
M  V30 COUNTS 27 32 0 0 0
M  V30 BEGIN ATOM
M  V30 BEGIN ATOM
M  V30 1 C 4.42164 -3.4051 0.0 0
M  V30 1 C 6.66563 -3.83182 0.0 0
M  V30 2 C 6.16573 -3.41315 0.0 0
M  V30 2 C 8.16176 -3.83141 0.0 0
M  V30 3 C 5.23126 -2.93902 0.0 0
M  V30 3 C 7.41512 -3.3994 0.0 0
M  V30 4 N 6.24607 -4.34967 0.0 0
M  V30 4 N 8.16176 -4.69689 0.0 0
M  V30 5 C 4.43988 -4.2752 0.0 0
M  V30 5 C 6.66563 -4.70077 0.0 0
M  V30 6 C 5.33647 -4.80741 0.0 0
M  V30 6 C 7.417 -5.12879 0.0 0
M  V30 7 C 7.1536 -2.01998 0.0 0
M  V30 7 C 8.91079 -3.39942 0.0 0
M  V30 8 C 8.69562 -2.15033 0.0 0
M  V30 8 C 9.65823 -2.10337 0.0 0
M  V30 9 C 7.97052 -1.65293 0.0 0
M  V30 9 C 8.91086 -2.53414 0.0 0
M  V30 10 C 8.6606 -3.11885 0.0 0
M  V30 10 C 10.4079 -2.53595 0.0 0
M  V30 11 C 7.04069 -2.96795 0.0 0
M  V30 11 N 9.66341 -3.83374 0.0 0
M  V30 12 N 7.81868 -3.57293 0.0 0
M  V30 12 C 10.4097 -3.3969 0.0 0
M  V30 13 C 5.6923 -5.52361 0.0 0
M  V30 13 C 6.68725 -6.40421 0.0 0
M  V30 14 C 6.93663 -6.52444 0.0 0
M  V30 14 N 8.18338 -6.40379 0.0 0
M  V30 15 N 6.60503 -5.6549 0.0 0
M  V30 15 C 7.43673 -5.97179 0.0 0
M  V30 16 C 6.34029 -7.29343 0.0 0
M  V30 16 C 8.18338 -7.26927 0.0 0
M  V30 17 C 5.12026 -6.37657 0.0 0
M  V30 17 C 6.68725 -7.27316 0.0 0
M  V30 18 C 5.48652 -7.18714 0.0 0
M  V30 18 C 7.43862 -7.70118 0.0 0
M  V30 19 C 7.64521 -6.74796 0.0 0
M  V30 19 C 8.93262 -7.70089 0.0 0
M  V30 20 C 9.23795 -6.29939 0.0 0
M  V30 20 C 10.4288 -7.69803 0.0 0
M  V30 21 N 8.25086 -6.00768 0.0 0
M  V30 21 N 9.6814 -7.26724 0.0 0
M  V30 22 C 9.43514 -7.33957 0.0 0
M  V30 22 C 10.4302 -8.56351 0.0 0
M  V30 23 C 7.96229 -7.64558 0.0 0
M  V30 23 C 8.93404 -8.56983 0.0 0
M  V30 24 C 8.77162 -7.93243 0.0 0
M  V30 24 C 9.68611 -8.99663 0.0 0
M  V30 25 Cl 8.45093 -4.23617 0.0 0 CHG=-1
M  V30 25 Ru 9.65664 -5.53338 0.0 0 CHG=2
M  V30 26 Cl 8.54195 -5.09895 0.0 0 CHG=-1
M  V30 26 Cl 10.9874 -4.79065 0.0 0 CHG=-1
M  V30 27 Ru 7.51723 -4.8062 0.0 0 CHG=2
M  V30 27 Cl 10.9874 -6.28831 0.0 0 CHG=-1
M  V30 END ATOM
M  V30 END ATOM
M  V30 BEGIN BOND
M  V30 BEGIN BOND
Line 60: Line 59:
M  V30 5 2 5 6
M  V30 5 2 5 6
M  V30 6 1 6 4
M  V30 6 1 6 4
M  V30 7 2 9 7
M  V30 7 1 2 7
M  V30 8 2 10 8
M  V30 8 2 9 7
M  V30 9 1 7 11
M  V30 9 2 10 8
M  V30 10 1 8 9
M  V30 10 1 7 11
M  V30 11 2 11 12
M  V30 11 1 8 9
M  V30 12 1 12 10
M  V30 12 2 11 12
M  V30 13 2 15 13
M  V30 13 1 12 10
M  V30 14 2 16 14
M  V30 14 2 15 13
M  V30 15 1 13 17
M  V30 15 2 16 14
M  V30 16 1 14 15
M  V30 16 1 13 17
M  V30 17 2 17 18
M  V30 17 1 14 15
M  V30 18 1 18 16
M  V30 18 2 17 18
M  V30 19 2 21 19
M  V30 19 1 18 16
M  V30 20 2 22 20
M  V30 20 1 16 19
M  V30 21 1 19 23
M  V30 21 2 21 19
M  V30 22 1 20 21
M  V30 22 2 22 20
M  V30 23 2 23 24
M  V30 23 1 19 23
M  V30 24 1 24 22
M  V30 24 1 20 21
M  V30 25 1 2 11
M  V30 25 2 23 24
M  V30 26 1 14 19
M  V30 26 1 24 22
M  V30 27 8 4 27
M  V30 27 10 11 25
M  V30 28 8 12 27
M  V30 28 10 25 21
M  V30 29 8 15 27
M  V30 29 10 25 14
M  V30 30 8 21 27
M  V30 30 10 25 4
M  V30 31 8 27 26
M  V30 31 10 26 25
M  V30 32 8 27 25
M  V30 32 10 27 25
M  V30 END BOND
M  V30 END BOND
M  V30 END CTAB
M  V30 END CTAB
Line 165: Line 164:
M  V30 END CTAB
M  V30 END CTAB
M  END
M  END
</chemform><chemform smiles="F[P-](F)(F)(F)(F)F.C1C=CN2[Ru+2]([*])([*])(N3=CC=CC=C3C=2C=1)1N2C=CC=CC=2C2C=CC=CN=21" inchikey="CPFZZAZNEQBLAC-UHFFFAOYSA-N" inchi="1S/2C10H8N2.CO.2F6P.H2O.Ru/c2*1-3-7-11-9(5-1)10-6-2-4-8-12-10;1-2;2*1-7(2,3,4,5)6;;/h2*1-8H;;;;1H2;/q;;;2*-1;;+2" float="none" width="200" height="200">
</chemform><chemform smiles="C1C=CN2[Ru+2]([C-]#[O+])([Cl-])3(N4C=CC=CC=4C4C=CC=CN=43)N3=CC=CC=C3C=2C=1.F[P-](F)(F)(F)(F)F" inchikey="QJMAHGUIKKRXBN-UHFFFAOYSA-M" inchi="1S/2C10H8N2.CO.ClH.F6P.Ru/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;;1H;;/q;;;;-1;+2/p-1" float="none" width="200" height="200">
   -INDIGO-01092415522D
   -INDIGO-02262411182D


   0  0  0  0  0  0  0  0  0  0  0 V3000
   0  0  0  0  0  0  0  0  0  0  0 V3000
M  V30 BEGIN CTAB
M  V30 BEGIN CTAB
M  V30 COUNTS 34 38 0 0 0
M  V30 COUNTS 35 39 0 0 0
M  V30 BEGIN ATOM
M  V30 BEGIN ATOM
M  V30 1 F 8.767 -6.05 0.0 0
M  V30 1 C 7.92242 -4.28512 0.0 0
M  V30 2 P 9.633 -5.55 0.0 0 CHG=-1
M  V30 2 C 9.3939 -4.28472 0.0 0
M  V30 3 F 10.499 -6.05 0.0 0
M  V30 3 C 8.65956 -3.85983 0.0 0
M  V30 4 F 9.633 -4.55 0.0 0
M  V30 4 N 9.3939 -5.13594 0.0 0
M  V30 5 F 8.767 -5.05 0.0 0
M  V30 5 C 7.92242 -5.13976 0.0 0
M  V30 6 F 10.499 -5.05 0.0 0
M  V30 6 C 8.66141 -5.56073 0.0 0
M  V30 7 F 9.633 -6.55 0.0 0
M  V30 7 C 10.1306 -3.85985 0.0 0
M  V30 8 C 3.00985 -3.67507 0.0 0
M  V30 8 C 10.8657 -2.58515 0.0 0
M  V30 9 C 4.74015 -3.67459 0.0 0
M  V30 9 C 10.1307 -3.00882 0.0 0
M  V30 10 C 3.87664 -3.17497 0.0 0
M  V30 10 C 11.603 -3.0106 0.0 0
M  V30 11 N 4.74015 -4.67553 0.0 0
M  V30 11 N 10.8708 -4.28701 0.0 0
M  V30 12 C 3.00985 -4.68002 0.0 0
M  V30 12 C 11.6048 -3.85737 0.0 0
M  V30 13 C 3.87882 -5.17503 0.0 0
M  V30 13 C 7.94368 -6.81514 0.0 0
M  V30 14 C 5.60641 -3.17499 0.0 0
M  V30 14 N 9.41516 -6.81473 0.0 0
M  V30 15 C 6.47083 -1.67609 0.0 0
M  V30 15 C 8.68081 -6.38984 0.0 0
M  V30 16 C 5.60649 -2.17428 0.0 0
M  V30 16 C 9.41516 -7.66595 0.0 0
M  V30 17 C 7.33778 -2.17638 0.0 0
M  V30 17 C 7.94368 -7.66977 0.0 0
M  V30 18 N 6.47682 -3.67729 0.0 0
M  V30 18 C 8.68267 -8.09074 0.0 0
M  V30 19 C 7.3399 -3.17207 0.0 0
M  V30 19 C 10.1521 -8.09046 0.0 0
M  V30 20 C 3.03485 -6.65007 0.0 0
M  V30 20 C 11.6236 -8.08764 0.0 0
M  V30 21 N 4.76515 -6.64959 0.0 0
M  V30 21 N 10.8885 -7.66395 0.0 0
M  V30 22 C 3.90164 -6.14997 0.0 0
M  V30 22 C 11.625 -8.93887 0.0 0
M  V30 23 C 4.76515 -7.65053 0.0 0
M  V30 23 C 10.1535 -8.94508 0.0 0
M  V30 24 C 3.03485 -7.65502 0.0 0
M  V30 24 C 10.8931 -9.36485 0.0 0
M  V30 25 C 3.90382 -8.15003 0.0 0
M  V30 25 Ru 10.8641 -5.90948 0.0 0 CHG=2
M  V30 26 C 5.63166 -8.1497 0.0 0
M  V30 26 Cl 12.2323 -4.95054 0.0 0 CHG=-1
M  V30 27 C 7.36196 -8.14639 0.0 0
M  V30 27 C 12.2815 -6.62253 0.0 0 CHG=-1
M  V30 28 N 6.49763 -7.64818 0.0 0
M  V30 28 O 13.1332 -7.1143 0.0 0 CHG=1
M  V30 29 C 7.36359 -9.14733 0.0 0
M  V30 29 F 13.8741 -4.45053 0.0 0
M  V30 30 C 5.6333 -9.15464 0.0 0
M  V30 30 P 14.7258 -3.95877 0.0 0 CHG=-1
M  V30 31 C 6.50308 -9.64824 0.0 0
M  V30 31 F 15.5776 -4.45053 0.0 0
M  V30 32 Ru 6.48118 -5.65053 0.0 0 CHG=2
M  V30 32 F 14.7258 -2.97524 0.0 0
M  V30 33 R# 7.4971 -4.94171 0.0 0 RGROUPS=(1 1)
M  V30 33 F 13.8741 -3.46701 0.0 0
M  V30 34 R# 7.4972 -6.22553 0.0 0 RGROUPS=(1 2)
M  V30 34 F 15.5776 -3.46701 0.0 0
M  V30 35 F 14.7258 -4.9423 0.0 0
M  V30 END ATOM
M  V30 END ATOM
M  V30 BEGIN BOND
M  V30 BEGIN BOND
M  V30 1 1 1 2
M  V30 1 2 3 1
M  V30 2 1 2 3
M  V30 2 2 4 2
M  V30 3 1 2 4
M  V30 3 1 1 5
M  V30 4 1 2 5
M  V30 4 1 2 3
M  V30 5 1 2 6
M  V30 5 2 5 6
M  V30 6 1 2 7
M  V30 6 1 6 4
M  V30 7 2 10 8
M  V30 7 1 2 7
M  V30 8 2 11 9
M  V30 8 2 9 7
M  V30 9 1 8 12
M  V30 9 2 10 8
M  V30 10 1 9 10
M  V30 10 1 7 11
M  V30 11 2 12 13
M  V30 11 1 8 9
M  V30 12 1 13 11
M  V30 12 2 11 12
M  V30 13 1 9 14
M  V30 13 1 12 10
M  V30 14 2 16 14
M  V30 14 2 15 13
M  V30 15 2 17 15
M  V30 15 2 16 14
M  V30 16 1 14 18
M  V30 16 1 13 17
M  V30 17 1 15 16
M  V30 17 1 14 15
M  V30 18 2 18 19
M  V30 18 2 17 18
M  V30 19 1 19 17
M  V30 19 1 18 16
M  V30 20 2 22 20
M  V30 20 1 16 19
M  V30 21 2 23 21
M  V30 21 2 21 19
M  V30 22 1 20 24
M  V30 22 2 22 20
M  V30 23 1 21 22
M  V30 23 1 19 23
M  V30 24 2 24 25
M  V30 24 1 20 21
M  V30 25 1 25 23
M  V30 25 2 23 24
M  V30 26 1 23 26
M  V30 26 1 24 22
M  V30 27 2 28 26
M  V30 27 10 11 25
M  V30 28 2 29 27
M  V30 28 10 25 21
M  V30 29 1 26 30
M  V30 29 10 25 14
M  V30 30 1 27 28
M  V30 30 10 25 4
M  V30 31 2 30 31
M  V30 31 10 25 26
M  V30 32 1 31 29
M  V30 32 10 25 27
M  V30 33 10 11 32
M  V30 33 3 27 28
M  V30 34 10 32 21
M  V30 34 1 29 30
M  V30 35 10 32 28
M  V30 35 1 30 31
M  V30 36 10 32 18
M  V30 36 1 30 32
M  V30 37 10 32 33
M  V30 37 1 30 33
M  V30 38 10 32 34
M  V30 38 1 30 34
M  V30 39 1 30 35
M  V30 END BOND
M  V30 END CTAB
M  END
</chemform><chemform smiles="C1C=CN2[Ru+2]([C-]#[O+])(O([H])[H])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" inchi="1S/2C10H8N2.CO.2F6P.H2O.Ru/c2*1-3-7-11-9(5-1)10-6-2-4-8-12-10;1-2;2*1-7(2,3,4,5)6;;/h2*1-8H;;;;1H2;/q;;;2*-1;;+2" inchikey="CPFZZAZNEQBLAC-UHFFFAOYSA-N" height="200px" width="300px" float="none">
  -INDIGO-02152416342D
 
  0  0  0  0  0  0  0  0  0  0  0 V3000
M  V30 BEGIN CTAB
M  V30 COUNTS 44 47 0 0 0
M  V30 BEGIN ATOM
M  V30 1 C 5.62242 -3.98512 0.0 0
M  V30 2 C 7.0939 -3.98472 0.0 0
M  V30 3 C 6.35956 -3.55983 0.0 0
M  V30 4 N 7.0939 -4.83594 0.0 0
M  V30 5 C 5.62242 -4.83976 0.0 0
M  V30 6 C 6.36141 -5.26073 0.0 0
M  V30 7 C 7.83059 -3.55985 0.0 0
M  V30 8 C 8.56572 -2.28515 0.0 0
M  V30 9 C 7.83066 -2.70882 0.0 0
M  V30 10 C 9.30303 -2.7106 0.0 0
M  V30 11 N 8.57081 -3.98701 0.0 0
M  V30 12 C 9.3048 -3.55737 0.0 0
M  V30 13 C 5.64368 -6.51514 0.0 0
M  V30 14 N 7.11516 -6.51473 0.0 0
M  V30 15 C 6.38081 -6.08984 0.0 0
M  V30 16 C 7.11516 -7.36595 0.0 0
M  V30 17 C 5.64368 -7.36977 0.0 0
M  V30 18 C 6.38267 -7.79074 0.0 0
M  V30 19 C 7.85206 -7.79046 0.0 0
M  V30 20 C 9.32359 -7.78764 0.0 0
M  V30 21 N 8.5885 -7.36395 0.0 0
M  V30 22 C 9.32497 -8.63887 0.0 0
M  V30 23 C 7.85346 -8.64508 0.0 0
M  V30 24 C 8.59314 -9.06485 0.0 0
M  V30 25 Ru 8.56415 -5.60948 0.0 0 CHG=2
M  V30 26 O 9.93229 -4.65054 0.0 0
M  V30 27 C 9.98149 -6.32253 0.0 0 CHG=-1
M  V30 28 O 10.8332 -6.8143 0.0 0 CHG=1
M  V30 29 H 10.8388 -5.07273 0.0 0
M  V30 30 H 9.84466 -3.65439 0.0 0
M  V30 31 F 11.5741 -4.15053 0.0 0
M  V30 32 P 12.4258 -3.65877 0.0 0 CHG=-1
M  V30 33 F 13.2776 -4.15053 0.0 0
M  V30 34 F 12.4258 -2.67524 0.0 0
M  V30 35 F 11.5741 -3.16701 0.0 0
M  V30 36 F 13.2776 -3.16701 0.0 0
M  V30 37 F 12.4258 -4.6423 0.0 0
M  V30 38 F 12.709 -7.35 0.0 0
M  V30 39 P 13.5749 -6.85 0.0 0 CHG=-1
M  V30 40 F 14.441 -7.35 0.0 0
M  V30 41 F 13.5749 -5.84999 0.0 0
M  V30 42 F 12.709 -6.35 0.0 0
M  V30 43 F 14.441 -6.35 0.0 0
M  V30 44 F 13.5749 -7.85001 0.0 0
M  V30 END ATOM
M  V30 BEGIN BOND
M  V30 1 2 3 1
M  V30 2 2 4 2
M  V30 3 1 1 5
M  V30 4 1 2 3
M  V30 5 2 5 6
M  V30 6 1 6 4
M  V30 7 1 2 7
M  V30 8 2 9 7
M  V30 9 2 10 8
M  V30 10 1 7 11
M  V30 11 1 8 9
M  V30 12 2 11 12
M  V30 13 1 12 10
M  V30 14 2 15 13
M  V30 15 2 16 14
M  V30 16 1 13 17
M  V30 17 1 14 15
M  V30 18 2 17 18
M  V30 19 1 18 16
M  V30 20 1 16 19
M  V30 21 2 21 19
M  V30 22 2 22 20
M  V30 23 1 19 23
M  V30 24 1 20 21
M  V30 25 2 23 24
M  V30 26 1 24 22
M  V30 27 10 11 25
M  V30 28 10 25 21
M  V30 29 10 25 14
M  V30 30 10 25 4
M  V30 31 10 25 26
M  V30 32 10 25 27
M  V30 33 3 27 28
M  V30 34 1 26 29
M  V30 35 1 26 30
M  V30 36 1 31 32
M  V30 37 1 32 33
M  V30 38 1 32 34
M  V30 39 1 32 35
M  V30 40 1 32 36
M  V30 41 1 32 37
M  V30 42 1 38 39
M  V30 43 1 39 40
M  V30 44 1 39 41
M  V30 45 1 39 42
M  V30 46 1 39 43
M  V30 47 1 39 44
M  V30 END BOND
M  V30 END BOND
M  V30 END CTAB
M  V30 END CTAB
M  END
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">
</chemform><chemform smiles="C1C=CN2[Ru+2](O=C(C)C)(O=C(C)C)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" 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" inchikey="MVHJANUNBKMKDC-UHFFFAOYSA-N" height="200px" width="300px" float="none">
   -INDIGO-01092415502D
   -INDIGO-02262411282D


   0  0  0  0  0  0  0  0  0  0  0 V3000
   0  0  0  0  0  0  0  0  0  0  0 V3000
M  V30 BEGIN CTAB
M  V30 BEGIN CTAB
M  V30 COUNTS 41 44 0 0 0
M  V30 COUNTS 47 50 0 0 0
M  V30 BEGIN ATOM
M  V30 BEGIN ATOM
M  V30 1 F 12.767 -3.05 0.0 0
M  V30 1 F 12.1174 -3.75053 0.0 0
M  V30 2 P 13.633 -2.55 0.0 0 CHG=-1
M  V30 2 P 12.9691 -3.25877 0.0 0 CHG=-1
M  V30 3 F 14.499 -3.05 0.0 0
M  V30 3 F 13.8209 -3.75053 0.0 0
M  V30 4 F 13.633 -1.55 0.0 0
M  V30 4 F 12.9691 -2.27524 0.0 0
M  V30 5 F 12.767 -2.05 0.0 0
M  V30 5 F 12.1174 -2.76701 0.0 0
M  V30 6 F 14.499 -2.05 0.0 0
M  V30 6 F 13.8209 -2.76701 0.0 0
M  V30 7 F 13.633 -3.55 0.0 0
M  V30 7 F 12.9691 -4.2423 0.0 0
M  V30 8 F 13.109 -6.375 0.0 0
M  V30 8 F 12.0523 -6.85 0.0 0
M  V30 9 P 13.975 -5.875 0.0 0 CHG=-1
M  V30 9 P 12.9182 -6.35 0.0 0 CHG=-1
M  V30 10 F 14.841 -6.375 0.0 0
M  V30 10 F 13.7843 -6.85 0.0 0
M  V30 11 F 13.975 -4.875 0.0 0
M  V30 11 F 12.9182 -5.34999 0.0 0
M  V30 12 F 13.109 -5.375 0.0 0
M  V30 12 F 12.0523 -5.85 0.0 0
M  V30 13 F 14.841 -5.375 0.0 0
M  V30 13 F 13.7843 -5.85 0.0 0
M  V30 14 F 13.975 -6.875 0.0 0
M  V30 14 F 12.9182 -7.35001 0.0 0
M  V30 15 C 4.00985 -3.42507 0.0 0
M  V30 15 C 4.96571 -3.48512 0.0 0
M  V30 16 C 5.74015 -3.42459 0.0 0
M  V30 16 C 6.43719 -3.48472 0.0 0
M  V30 17 C 4.87664 -2.92497 0.0 0
M  V30 17 C 5.70285 -3.05983 0.0 0
M  V30 18 N 5.74015 -4.42553 0.0 0
M  V30 18 N 6.43719 -4.33594 0.0 0
M  V30 19 C 4.00985 -4.43002 0.0 0
M  V30 19 C 4.96571 -4.33976 0.0 0
M  V30 20 C 4.87882 -4.92503 0.0 0
M  V30 20 C 5.7047 -4.76073 0.0 0
M  V30 21 C 6.60641 -2.92499 0.0 0
M  V30 21 C 7.17388 -3.05985 0.0 0
M  V30 22 C 7.47083 -1.42609 0.0 0
M  V30 22 C 7.90901 -1.78515 0.0 0
M  V30 23 C 6.60649 -1.92428 0.0 0
M  V30 23 C 7.17395 -2.20882 0.0 0
M  V30 24 C 8.33778 -1.92638 0.0 0
M  V30 24 C 8.64632 -2.2106 0.0 0
M  V30 25 N 7.47682 -3.42729 0.0 0
M  V30 25 N 7.9141 -3.48701 0.0 0
M  V30 26 C 8.3399 -2.92207 0.0 0
M  V30 26 C 8.64809 -3.05737 0.0 0
M  V30 27 C 3.98485 -6.37507 0.0 0
M  V30 27 C 4.98697 -6.01514 0.0 0
M  V30 28 N 5.71515 -6.37459 0.0 0
M  V30 28 N 6.45845 -6.01473 0.0 0
M  V30 29 C 4.85164 -5.87497 0.0 0
M  V30 29 C 5.7241 -5.58984 0.0 0
M  V30 30 C 5.71515 -7.37553 0.0 0
M  V30 30 C 6.45845 -6.86595 0.0 0
M  V30 31 C 3.98485 -7.38002 0.0 0
M  V30 31 C 4.98697 -6.86977 0.0 0
M  V30 32 C 4.85382 -7.87503 0.0 0
M  V30 32 C 5.72596 -7.29074 0.0 0
M  V30 33 C 6.58166 -7.8747 0.0 0
M  V30 33 C 7.19535 -7.29046 0.0 0
M  V30 34 C 8.31196 -7.87139 0.0 0
M  V30 34 C 8.66688 -7.28764 0.0 0
M  V30 35 N 7.44763 -7.37318 0.0 0
M  V30 35 N 7.93179 -6.86395 0.0 0
M  V30 36 C 8.31359 -8.87233 0.0 0
M  V30 36 C 8.66826 -8.13887 0.0 0
M  V30 37 C 6.5833 -8.87964 0.0 0
M  V30 37 C 7.19675 -8.14508 0.0 0
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
M  V30 44 C 11.0076 -4.15054 0.0 0
M  V30 45 C 10.1895 -6.30948 0.0 0
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 END ATOM
M  V30 BEGIN BOND
M  V30 BEGIN BOND
Line 337: Line 447:
M  V30 37 2 37 38
M  V30 37 2 37 38
M  V30 38 1 38 36
M  V30 38 1 38 36
M  V30 39 10 18 40
M  V30 39 10 25 39
M  V30 40 10 40 25
M  V30 40 10 39 35
M  V30 41 10 40 28
M  V30 41 10 39 28
M  V30 42 10 40 35
M  V30 42 10 39 18
M  V30 43 10 40 39
M  V30 43 10 39 40
M  V30 44 10 40 41
M  V30 44 10 39 41
M  V30 45 2 40 42
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  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
M  V30 4 N 6.0439 -4.76094 0.0 0
M  V30 5 C 4.57242 -4.76476 0.0 0
M  V30 6 C 5.31141 -5.18573 0.0 0
M  V30 7 C 6.78059 -3.48485 0.0 0
M  V30 8 C 7.51572 -2.21015 0.0 0
M  V30 9 C 6.78066 -2.63382 0.0 0
M  V30 10 C 8.25303 -2.6356 0.0 0
M  V30 11 N 7.52081 -3.91201 0.0 0
M  V30 12 C 8.2548 -3.48237 0.0 0
M  V30 13 C 4.59368 -6.44014 0.0 0
M  V30 14 N 6.06516 -6.43973 0.0 0
M  V30 15 C 5.33081 -6.01484 0.0 0
M  V30 16 C 6.06516 -7.29095 0.0 0
M  V30 17 C 4.59368 -7.29477 0.0 0
M  V30 18 C 5.33267 -7.71574 0.0 0
M  V30 19 C 6.80206 -7.71546 0.0 0
M  V30 20 C 8.27359 -7.71264 0.0 0
M  V30 21 N 7.5385 -7.28895 0.0 0
M  V30 22 C 8.27497 -8.56387 0.0 0
M  V30 23 C 6.80346 -8.57008 0.0 0
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
M  V30 27 C 8.93149 -6.24753 0.0 0 CHG=-1
M  V30 28 O 9.78318 -6.7393 0.0 0 CHG=1
M  V30 29 F 10.5241 -4.07553 0.0 0
M  V30 30 P 11.3758 -3.58377 0.0 0 CHG=-1
M  V30 31 F 12.2276 -4.07553 0.0 0
M  V30 32 F 11.3758 -2.60024 0.0 0
M  V30 33 F 10.5241 -3.09201 0.0 0
M  V30 34 F 12.2276 -3.09201 0.0 0
M  V30 35 F 11.3758 -4.5673 0.0 0
M  V30 END ATOM
M  V30 BEGIN BOND
M  V30 1 2 3 1
M  V30 2 2 4 2
M  V30 3 1 1 5
M  V30 4 1 2 3
M  V30 5 2 5 6
M  V30 6 1 6 4
M  V30 7 1 2 7
M  V30 8 2 9 7
M  V30 9 2 10 8
M  V30 10 1 7 11
M  V30 11 1 8 9
M  V30 12 2 11 12
M  V30 13 1 12 10
M  V30 14 2 15 13
M  V30 15 2 16 14
M  V30 16 1 13 17
M  V30 17 1 14 15
M  V30 18 2 17 18
M  V30 19 1 18 16
M  V30 20 1 16 19
M  V30 21 2 21 19
M  V30 22 2 22 20
M  V30 23 1 19 23
M  V30 24 1 20 21
M  V30 25 2 23 24
M  V30 26 1 24 22
M  V30 27 10 11 25
M  V30 28 10 25 21
M  V30 29 10 25 14
M  V30 30 10 25 4
M  V30 31 10 25 26
M  V30 32 10 25 27
M  V30 33 3 27 28
M  V30 34 1 29 30
M  V30 35 1 30 31
M  V30 36 1 30 32
M  V30 37 1 30 33
M  V30 38 1 30 34
M  V30 39 1 30 35
M  V30 END BOND
M  V30 END BOND
M  V30 END CTAB
M  V30 END CTAB
Line 457: Line 659:
M  END
M  END
</chemform>
</chemform>
=== Investigations ===
{{#experimentlist:|form=Photocatalytic_CO2_conversion_experiments|name=Table 1}}


{{#experimentlist:|form=Photocatalytic_CO2_conversion_experiments|name=Table 2}}
==== Investigations ====
{{#experimentlist: |form=Photocatalytic_CO2_conversion_experiments|name=CO2 reduction experiments}}
 
{{#experimentlist: |form=Photocatalytic_CO2_conversion_experiments|name=Optimization of concentrations}}


{{#experimentlist:|form=Cyclic_Voltammetry_experiments|name=Table 3 - CV}}
{{#experimentlist:|form=Cyclic_Voltammetry_experiments|name=Table 3 - CV}}
Line 468: Line 671:


==== Additives ====
==== Additives ====
No additives were used in the described experiments.
No additives were used in the described experiments.[[Category:Publication]]

Latest revision as of 15:15, 5 July 2024


Abstract[edit | edit source]

Summary[edit | edit source]

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]

catcat conc [µM]PSPS conc [mM]e-Dsolvent A.λexc [nm]TON COTON H2TON HCOOH.
1.

Ru(bpy)2Cl2

25

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

0.025

TEOA

NMP

400 - 7001213
2.

Ru(bpy)2CO3

25

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

0.025

TEOA

NMP

400 - 7002421
3.

[Ru(bpy)2ClCO][PF6]

25

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

0.025

TEOA

NMP

400 - 70013862
4.

[Ru(bpy)2HCO][PF6]

25

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

0.025

TEOA

NMP

400 - 7008834
5.

[Ru(bpy)(H2O)(CO)][PF6]

25

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

0.025

TEOA

NMP

400 - 7007940
6.

[Ru(bpy)(AcMe)2][PF6]

25

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

0.025

TEOA

NMP

400 - 7003427
Investigation-Name: CO2 reduction experiments
catcat conc [µM]PSPS conc [mM]e-Dsolvent A.λexc [nm]TON COTON H2TON HCOOH.
1.

Ru(bpy)2Cl2

6.2

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

0.025

TEOA

NMP

400 - 7003926
2.

Ru(bpy)2CO3

6.2

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

0.025

TEOA

NMP

400 - 70031139
3.

[Ru(bpy)2ClCO][PF6]

6.2

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

0.025

TEOA

NMP

400 - 7001919117
4.

[Ru(bpy)2HCO][PF6]

6.2

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

0.025

TEOA

NMP

400 - 7002116107
5.

[Ru(bpy)(H2O)(CO)][PF6]

6.2

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

0.025

TEOA

NMP

400 - 700211475
6.

[Ru(bpy)(AcMe)2][PF6]

6.2

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

0.025

TEOA

NMP

400 - 70041264
7.

[Ru(bpy)2ClCO][PF6]

3.1

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

0.025

TEOA

NMP

400 - 7003633296
8.

[Ru(bpy)2HCO][PF6]

3.1

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

0.025

TEOA

NMP

400 - 7001629145
9.

[Ru(bpy)(H2O)(CO)][PF6]

3.1

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

0.025

TEOA

NMP

400 - 7003428211
10.

[Ru(bpy)2ClCO][PF6]

1.6

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

0.025

TEOA

NMP

400 - 7004067419
11.

[Ru(bpy)2HCO][PF6]

1.6

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

0.025

TEOA

NMP

400 - 7002562225
12.

[Ru(bpy)(H2O)(CO)][PF6]

1.6

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

0.025

TEOA

NMP

400 - 7004565335
13.

[Ru(bpy)(AcMe)2][PF6]

1.6

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

0.025

TEOA

NMP

400 - 70044475
Investigation-Name: Optimization of concentrations
analytereduction potentialsolventelectrolyte..WE..RE.
1.

Ru(bpy)2Cl2

0,-2.11

MeCN

TBABF4

glassy carbonAg/AgNO3 in MeCN
2.

Ru(bpy)2CO3

0.45,-1.97

MeCN

TBABF4

glassy carbonAg/AgNO3 in MeCN
3.

[Ru(bpy)2ClCO][PF6]

1.22,-1.75

MeCN

TBABF4

glassy carbonAg/AgNO3 in MeCN
4.

[Ru(bpy)2HCO][PF6]

1.20,-1.61

MeCN

TBABF4

glassy carbonAg/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