Phenoxazine-Sensitized CO2-to-CO Reduction with an Iron Porphyrin Catalyst: A Redox Properties-Catalytic Performance Study: Difference between revisions

Latest revision as of 10:37, 11 April 2024

A photochemical reduction of CO₂ to CO was shown using the iron porphyrin complex [Fe(pTMAPP)Cl][PF6]4 as catalyst, screening the effect of different phenoxazine-based photosensitizers on the CO production. Turnover numbers (TONs) of 115 and a selectivity of 100% for CO were reached in acetonitrile in combination with the photosensitizer 100762. 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]

In this study, the authors showed a strong relation between the oxidation potential of the photosensitizer and the CO production whereas no correlation between the CO production and the excited state potential of the photosensitizer was discovered. This identifies the electron transfer to regenerate the photosensitizer as a determining step and demonstrates the importance of improving the interaction between the photosensitizer and the sacrificial electron donor for optimization of the CO₂ reduction.

Additional remarks[edit | edit source]

The tested phenoxazine-based photosensitizers performed similarly in combination with the iron porphyrin complex and allowed for TONs of 88-115 and selectivities of 80-100% apart from complex 4-[7-[4-(diphenylamino)phenyl]-10-naphthalen-2-yl-phenoxazin-3-yl]-N,N-diphenyl-aniline that showed both a lower TON (32) and decreased selectivity (36%).

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

The article contains results for the reduction of CO₂ to CO under visible-light catalysis using an iron complex and different phenoxazine-based photosensitizers. The catalytic system performs best (referring to the TON of CO production) in acetonitrile.

Catalyst[edit | edit source]

[Fe(pTMAPP)Cl][PF6]4

Photosensitizer[edit | edit source]

3,7-Di((1,1'-biphenyl)-4-yl)-10-(naphthalen-1-yl)-10H-phenoxazine 100761 100762 100763 4-[7-[4-(diphenylamino)phenyl]-10-naphthalen-2-yl-phenoxazin-3-yl]-N,N-diphenyl-aniline 10-naphthalen-2-yl-3,7-di(pyren-1-yl)phenoxazine

Investigation[edit | edit source]

	cat	cat conc [µM]	PS	PS conc [mM]	e-D	e-D conc [M]	solvent A	additives	λexc [nm]	TON CO	TON H2
1.	[Fe(pTMAPP)Cl][PF6]4	0.002	Molecule:100493	0.2	BIH	0.005	MeCN	TFE	> 400	103	25
2.	[Fe(pTMAPP)Cl][PF6]4	0.002	Molecule:100761	0.2	BIH	0.005	MeCN	TFE	> 400	88	12
3.	[Fe(pTMAPP)Cl][PF6]4	0.002	Molecule:100762	0.2	BIH	0.005	MeCN	TFE	> 400	115
4.	[Fe(pTMAPP)Cl][PF6]4	0.002	Molecule:100763	0.2	BIH	0.005	MeCN	TFE	> 400	112	12
5.	[Fe(pTMAPP)Cl][PF6]4	0.002	Molecule:100764	0.2	BIH	0.005	MeCN	TFE	> 400	32	57
6.	[Fe(pTMAPP)Cl][PF6]4	0.002	Molecule:100765	0.2	BIH	0.005	MeCN	TFE	> 400	89

Investigation-Name: Table 1

Sacrificial Electron Donor[edit | edit source]

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

Additives[edit | edit source]

In this study, TFE was used as an additive.

Investigations

Table 1 (Molecular process, Photocatalytic CO2 conversion experiments)

DOI	10.1002/cptc.202200009
Authors	Martin Kientz, Grace Lowe, Blaine G. McCarthy, Garret M. Miyake, Julien Bonin, Marc Robert,
Submitted	11.03.2022
Published online	29.03.2022
Licenses	http://creativecommons.org/licenses/by/4.0/, http://doi.wiley.com/10.1002/tdm_license_1.1,
Subjects	Organic Chemistry, Physical and Theoretical Chemistry, Analytical Chemistry
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Phenoxazine-Sensitized CO2-to-CO Reduction with an Iron Porphyrin Catalyst: A Redox Properties-Catalytic Performance Study: 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]

Photosensitizer[edit | edit source]

Investigation[edit | edit source]

Sacrificial Electron Donor[edit | edit source]

Additives[edit | edit source]

Investigations

Topics

@@ Line 1: / Line 1: @@
-{{#doiinfobox: 10.1002/cptc.202200009}}
+{{DOI|doi=10.1002/cptc.202200009}}
 [[Category:Photocatalytic CO2 conversion to CO]]
 {{BaseTemplate}}
+===Abstract===
+====Summary====
+A photochemical reduction of CO<sub>2</sub> to CO was shown using the iron porphyrin complex {{#moleculelink:|link=FAKQJSUSUXMEFI-NGWNFTKISA-M|image=false|width=300|height=200}} as catalyst, screening the effect of different phenoxazine-based photosensitizers on the CO production. Turnover numbers (TONs) of 115 and a selectivity of 100% for CO were reached in acetonitrile in combination with the photosensitizer {{#moleculelink:|link=HDOFYEULLIFSQY-UHFFFAOYSA-N|image=false|width=300|height=200}}. 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====
+In this study, the authors showed a strong relation between the oxidation potential of the photosensitizer and the CO production whereas no correlation between the CO production and the excited state potential of the photosensitizer was discovered. This identifies the electron transfer to regenerate the photosensitizer as a determining step and demonstrates the importance of improving the interaction between the photosensitizer and the sacrificial electron donor for optimization of the CO<sub>2</sub> reduction.
+====Additional remarks====
+The tested phenoxazine-based photosensitizers performed similarly in combination with the iron porphyrin complex and allowed for TONs of 88-115 and selectivities of 80-100% apart from complex {{#moleculelink:|link=JUDLWUDCWSBXOA-UHFFFAOYSA-N|image=false|width=300|height=200}} that showed both a lower TON (32) and decreased selectivity (36%).
+===Content of the published article in detail ===
+The article contains results for the reduction of CO<sub>2</sub> to CO under visible-light catalysis using an iron complex and different phenoxazine-based photosensitizers. The catalytic system performs best (referring to the TON of CO production) in acetonitrile.
 ====Catalyst====
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 ====Photosensitizer====
@@ Line 11: / Line 228: @@
 ====Investigation====
 {{#experimentlist:|form=Photocatalytic_CO2_conversion_experiments|name=Table 1}}
+====Sacrificial Electron Donor ====
-====Further Information====
+In this study, the experiments were done with the sacrificial electron donor BIH ({{#moleculelink:|link=VDFIVJSRRJXMAU-UHFFFAOYSA-N|image=false|width=300|height=200}}).
+==== Additives====
+In this study, {{#moleculelink:|link=RHQDFWAXVIIEBN-UHFFFAOYSA-N|image=false|width=300|height=200}} was used as an additive.[[Category:Publication]]

Phenoxazine-Sensitized CO2-to-CO Reduction with an Iron Porphyrin Catalyst: A Redox Properties-Catalytic Performance Study: 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]

Photosensitizer[edit | edit source]

Investigation[edit | edit source]

Sacrificial Electron Donor[edit | edit source]

Additives[edit | edit source]

Investigations

Current site

Topics