Highly Efficient and Selective Photocatalytic CO2 Reduction by Iron and Cobalt Quaterpyridine Complexes: Difference between revisions
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===Abstract=== | ===Abstract=== | ||
====Summary==== | ====Summary==== | ||
A photochemical reduction of CO<sub>2</sub> to CO was shown using the cobalt complex {{#moleculelink:|link=NLKWUAXOGCKGEY-UHFFFAOYSA-L|image=false|width=300|height=200}} or the iron complex {{#moleculelink:|link=OZQYFMFOIFRRLI-UHFFFAOYSA-L|image=false|width=300|height=200}} as catalysts in combination with the ruthenium-based photosensitizer {{#moleculelink:|link=SJFYGUKHUNLZTK-UHFFFAOYSA-L|image=false|width=300|height=200}} | A photochemical reduction of CO<sub>2</sub> to CO was shown using the cobalt complex {{#moleculelink:|link=NLKWUAXOGCKGEY-UHFFFAOYSA-L|image=false|width=300|height=200}} or the iron complex {{#moleculelink:|link=OZQYFMFOIFRRLI-UHFFFAOYSA-L|image=false|width=300|height=200}} as catalysts in combination with the ruthenium-based photosensitizer {{#moleculelink:|link=SJFYGUKHUNLZTK-UHFFFAOYSA-L|image=false|width=300|height=200}}. Turnover numbers (TONs) up to 2660 and a selectivity of 98% for CO using the cobalt catalyst and TONs of >3000 and a selectivity of 95% for CO using the iron catalyst were reached in acetonitrile/triethanolamine. When swapping the ruthenium photosensitizer for the organic dye sensitizer {{#moleculelink:|link=BBNQQADTFFCFGB-UHFFFAOYSA-N|image=false|width=300|height=200}}, TONs of 790 and 1365 in DMF were obtained for the cobalt and iron catalysts, respectively. The experiments were conducted under visible-light irradiation (λ = 460 nm) using BIH as sacrificial reductants (see section SEDs below). | ||
==== Advances and special progress==== | ==== Advances and special progress==== | ||
====Additional remarks==== | ====Additional remarks==== | ||
Revision as of 12:22, 10 January 2024
Abstract
Summary
A photochemical reduction of CO2 to CO was shown using the cobalt complex [Fe(qpy)(H2O)2][ClO4]2 or the iron complex [Co(qpy)(H2O)2][ClO4]2 as catalysts in combination with the ruthenium-based photosensitizer Ru(bpy)3Cl2. Turnover numbers (TONs) up to 2660 and a selectivity of 98% for CO using the cobalt catalyst and TONs of >3000 and a selectivity of 95% for CO using the iron catalyst were reached in acetonitrile/triethanolamine. When swapping the ruthenium photosensitizer for the organic dye sensitizer purpurin, TONs of 790 and 1365 in DMF were obtained for the cobalt and iron catalysts, respectively. The experiments were conducted under visible-light irradiation (λ = 460 nm) using BIH as sacrificial reductants (see section SEDs below).
Advances and special progress
Additional remarks
Content of the published article in detail
The article contains results for the reduction of CO2 to xx under visible-light catalysis using a xx complex as a catalyst. The catalytic system performs best (referring to the TON of CO production) in xx using xx and xx.
Catalysts
[Fe(qpy)(H2O)2][ClO4]2
[Co(qpy)(H2O)2][ClO4]2
Co(ClO4)2
Photosensitizers
Investigations
Sacrificial electron donor
In this study, the experiments were done with the sacrificial reductant BIH (100508).
Additives
In this study, some experiments were conducted xx
Investigations
- Optimizations of conditions for Co(qpy)(H2O)2(ClO4)2 and Ru(bpy)3Cl2 (Molecular process, Photocatalytic CO2 conversion experiments)
- Optimizations of conditions for Co(qpy)(H2O)2(ClO4)2 and purpurin (Molecular process, Photocatalytic CO2 conversion experiments)
- Optimizations of conditions for Fe(qpy)(H2O)2(ClO4)2 (Molecular process, Photocatalytic CO2 conversion experiments)
- Optimizations of conditions for Fe(qpy)(H2O)2(ClO4)2 and Ru(bpy)3Cl2 (Molecular process, Photocatalytic CO2 conversion experiments)
