Homogeneous photocatalytic CO2 conversion
The content of this topic page covers information on homogeneous approaches that are relevant for the reduction of CO2. Currently, the information on this page is limited to information on the conversion of CO2 to CO, CH4 and CHOOH, further extension of the content is planned in the future. To get the right context and preceding information, reading the higher level topics CO2 conversion and Photocatalytic CO2 conversion might be helpful.
Distinction from other articles within the topic >Photocatalytic CO2 conversion
>Photocatalytic CO2 conversion can be formally split into processes using homogeneous catalysis or heterogeneous catalysis for the conversion of the starting material CO2. In this article, we focus on the homogeneous catalysis which involves a catalyst that is in the same phase (usually liquid or gas) as the reactants. In this case, the catalyst and the reactants are well-mixed and form a single phase throughout the reaction. The catalyst interacts directly with the reactants, forming an intermediate complex, which then undergoes a reaction to form the desired products. Homogeneous catalysis often involves the use of transition metal complexes or organocatalysts. One advantage of homogeneous catalysis is that the catalyst can be precisely tuned and controlled to promote specific reactions. Reviews for further reading focusing on homogeneous photocatalytic CO2 conversion are available.[CoC12]
The related topic >Heterogeneous photocatalytic CO2 conversion refers to reactions that involve a catalyst that is in a different phase (typically solid) from the reactants. The reactants are in a different phase (liquid or gas) and come into contact with the solid catalyst, which is usually in the form of a powder or a material such as a modified surface or material in general. The reactants adsorb onto the surface of the catalyst, where the catalytic reaction occurs. For further information, please see chapter heterogeneous photocatalytic CO2 conversion and literature links therein.
Important aspects of homogeneous photocatalytic CO2 conversion
In comparison to heterogeneous photocatalytic CO2 conversion, homogeneous processes benfit from usually a uniform distribution of the catalyst in the reaction medium, faster reaction rates due to better contact between the catalyst and reactants, and a simpler reactor design due to the application of the catalyst in solution, whereas in heterogeneous systems, the catalyst often needs to be immobilized on a support material.
Summary of selected scientific progress
Table of all experiments that have a turnover number >100 for one of the products CO, CH2, HCOOH, H2 or MeOH. This table is sorted by catalyst.
Subtopics of "Homogeneous photocatalytic CO2 conversion"
This topic has the following 3 subtopics, out of 3 total.
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- Photocatalytic CO2 conversion to CH4 (4 publications)
- Photocatalytic CO2 conversion to CO (22 publications)
- Photocatalytic CO2 conversion to HCOOH (18 publications)
Literature
Publication: Rhenium(I) trinuclear rings as highly efficient redox photosensitizers for photocatalytic CO2 reduction
Publication: Pyranopterin Related Dithiolene Molybdenum Complexes as Homogeneous Catalysts for CO2 Photoreduction
Publication: Visible-Light Photocatalytic Conversion of Carbon Dioxide by Ni(II) Complexes with N4S2 Coordination: Highly Efficient and Selective Production of Formate
Publication: Visible-light-driven methane formation from CO2 with a molecular iron catalyst
Publication: Promoting photocatalytic CO2 reduction with a molecular copper purpurin chromophore
Publication: Selective and Efficient Photocatalytic CO2 Reduction to CO Using Visible Light and an Iron-Based Homogeneous Catalyst
Publication: Photocatalytic CO2 reduction with aminoanthraquinone organic dyes
Publication: Highly Efficient and Robust Photocatalytic Systems for CO2 Reduction Consisting of a Cu(I) Photosensitizer and Mn(I) Catalysts
Publication: Photocatalytic Reduction of Carbon Dioxide to CO and HCO2H Using fac-Mn(CN)(bpy)(CO)3
Publication: Photocatalytic CO2 reduction using a Mn complex as a catalyst
Publication: Visible light driven reduction of CO2 catalyzed by an abundant manganese catalyst with zinc porphyrin photosensitizer
Publication: Photocatalytic CO2 Reduction Using a Robust Multifunctional Iridium Complex toward the Selective Formation of Formic Acid
Publication: Molecular Catalysis of the Electrochemical and Photochemical Reduction of CO2 with Earth-Abundant Metal Complexes. Selective Production of CO vs HCOOH by Switching of the Metal Center
Publication: An integrated Re(I) photocatalyst and sensitizer that activates the formation of formic acid from reduction of CO2
Publication: A Dinuclear Cobalt Cryptate as a Homogeneous Photocatalyst for Highly Selective and Efficient Visible-Light Driven CO2 Reduction to CO in CH3CN-H2O Solution
Publication: Highly Efficient and Selective Photocatalytic CO2 Reduction by Iron and Cobalt Quaterpyridine Complexes
Publication: Phenoxazine-Sensitized CO2-to-CO Reduction with an Iron Porphyrin Catalyst: A Redox Properties-Catalytic Performance Study
Publication: Visible-Light Photoredox Catalysis: Selective Reduction of Carbon Dioxide to Carbon Monoxide by a Nickel N-Heterocyclic Carbene–Isoquinoline Complex
Publication: Visible-Light-Driven Photocatalytic CO2 Reduction by a Ni(II) Complex Bearing a Bioinspired Tetradentate Ligand for Selective CO Production
Publication: Visible-Light-Driven Conversion of CO2 to CH4 with an Organic Sensitizer and an Iron Porphyrin Catalyst
Publication: Toward Visible-Light Photochemical CO2‑to-CH4 Conversion in Aqueous Solutions Using Sensitized Molecular Catalysis
Publication: Durable Solar-Powered Systems with Ni-Catalysts for Conversion of CO2 or CO to CH4
Publication: Photochemical Reduction of Carbon Dioxide to Formic Acid using Ruthenium(II)-Based Catalysts and Visible Light
Publication: Photocatalytic CO2 Reduction under Visible-Light Irradiation by Ruthenium CNC Pincer Complexes
Publication: Exploring the Full Potential of Photocatalytic Carbon Dioxide Reduction Using a Dinuclear Re2Cl2 Complex Assisted by Various Photosensitizers
Publication: Visible-Light Photocatalytic Reduction of CO2 to Formic Acid with a Ru Catalyst Supported by N,N’- Bis(diphenylphosphino)-2,6-diaminopyridine Ligands
Publication: Merging an organic TADF photosensitizer and a simple terpyridine–Fe(iii) complex for photocatalytic CO2 reduction
Publication: Photocatalytic Reduction of CO2 by Highly Efficient Homogeneous FeII Catalyst based on 2,6-Bis(1’,2’,3’-triazolyl-methyl)pyridine. Comparison with Analogues.
Publication: Water-Assisted Highly Efficient Photocatalytic Reduction of CO2 to CO with Noble Metal-Free Bis(terpyridine)iron(II) Complexes and an Organic Photosensitizer
Publication: Highly efficient and selective visible-light driven CO2-to-CO conversion by a Co-based cryptate in H2O-CH3CN solution
Publication: Exchange Coupling Determines Metal-Dependent Efficiency for Iron- and Cobalt-Catalyzed Photochemical CO2 Reduction