Hui Zhang's research works | Shanghai University and other places

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Figure 1. The flow-cell CO 2 ER devices for heterogeneous and homogeneous catalysis The schematic illustration of heterogeneous catalyst (A) and homogeneous catalyst mediated (B) CO 2 reduction flow cells (Re stands for reduction, Ox stands for oxidation).

Figure 2. The generally proposed mechanisms for two types of homogeneous electrocatalysts for CO 2 ER and an example of type I electrocatalyst (A) The Type I homogeneous electrocatalyst works as a redox mediator for shuttling electrons between the electrode surface and CO 2 substrate (the left one). (B) The type II homogeneous electrocatalyst not only serves as an electron shuttler but also produces new chemical bonds with the CO 2 substrates. (C) The MV 2+ /MV $+ couple serves as the electron shuttler in the oxygen electroreduction, the electrocatalyst does not form any chemical bonds, noncovalent bonds, or polymerized interactions with the O 2 substrate. Reproduced with permission from ref. 37 Copyright, American Chemical Society.

Figure 3. Molecular orbital diagram of CO 2 The highest occupied molecular orbital (HOMO) of 1p g orbitals is mainly ascribed to the terminal oxygen atoms. The empty antibonding 2p u orbitals of the lowest unoccupied molecular orbital (LUMO) are mostly contributed by the carbon atoms.

Figure 4. Schematic illustration of homogeneous CO 2 ER for various products enabled by type II electrocatalysts in aqueous electrolytes, the CAT stands for the homogeneous catalysts dissolved in the electrolyte solution Reproduced with permission from ref. 50 Copyright, Wiley-VCH.

Figure 5. Scheme for CO production from the homogeneous CO 2 ER (A) A general mechanism of CO production from homogeneous CO 2 ER. (B) A specific example of CO production from CO 2 ER by Mn(I)-Tricarbonyl species. Reproduced with permission from ref. 99 Copyright, American Chemical Society.

How to rationally design homogeneous catalysts for efficient CO2 electroreduction?

Literature Review
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February 2024

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Hui Zhang's research while affiliated with Shanghai University and other places

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