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Molecular Au(I) complexes in the photosensitized photocatalytic CO2 reduction reaction

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Abstract

Five Au complexes are evaluated for the reduction reaction of CO2 via cyclic voltammetry and in a photocatalytic system. Electrochemically, the complexes were all evaluated for pre-association with CO2 prior to electrochemical reduction and for thermodynamic favorability for CO2 reduction in photocatalytic systems. The complexes were evaluated in photocatalytic reactions using an Ir-based photosensitizer and a sacrificial electron donor for the conversion of CO2 to CO. Au-complex counterion effects on the photocatalytic reaction were analyzed by varying weakly coordinating counterions with significant performance changes noted. At low Au-complex concentrations, a high TON value of 700 was observed.

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Acknowledgments

The authors gratefully acknowledge NSF award OIA-1632825 for funding this research. J.T. acknowledges traineeship support from the NSF NRT program “Interface” (DGE 1449999) through the University of Southern Mississippi.

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Authors and Affiliations

  1. Department of Chemistry and Biochemistry, University of Mississippi, University, MS, 38677, USA

    Shakeyia Davis, Dinesh Nugegoda & Jared H. Delcamp

  2. School of Polymer Science and Engineering, University of Southern Mississippi, Hattiesburg, MS, 39406, USA

    Joshua Tropp & Jason D. Azoulay

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  1. Shakeyia Davis
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  2. Dinesh Nugegoda
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  3. Joshua Tropp
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  4. Jason D. Azoulay
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  5. Jared H. Delcamp
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Correspondence to Jared H. Delcamp.

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The supplementary material for this article can be found at {rs|https://doi.org/10.1557/mrc.2020.21|url|}.

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Davis, S., Nugegoda, D., Tropp, J. et al. Molecular Au(I) complexes in the photosensitized photocatalytic CO2 reduction reaction. MRS Communications 10, 252–258 (2020). https://doi.org/10.1557/mrc.2020.21

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  • DOI: https://doi.org/10.1557/mrc.2020.21

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