Electrocatalytic and Solar-Driven CO2 Reduction to CO with a Molecular Manganese Catalyst Immobilized on Mesoporous TiO2.
Rosser, Timothy E
Windle, Christopher D
Angewandte Chemie International Edition
John Wiley & Sons Ltd.
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Rosser, T. E., Windle, C. D., & Reisner, E. (2016). Electrocatalytic and Solar-Driven CO2 Reduction to CO with a Molecular Manganese Catalyst Immobilized on Mesoporous TiO2.. Angewandte Chemie International Edition, 55 (26), 7388-7392. https://doi.org/10.1002/anie.201601038
Electrocatalytic CO2 reduction to CO was achieved with a novel Mn complex, fac-[MnBr(4,4'-bis(phosphonic acid)-2,2'-bipyridine)(CO)3 ] (MnP), immobilized on a mesoporous TiO2 electrode. A benchmark turnover number of 112±17 was attained with these TiO2 |MnP electrodes after 2 h electrolysis. Post-catalysis IR spectroscopy demonstrated that the molecular structure of the MnP catalyst was retained. UV/vis spectroscopy confirmed that an active Mn-Mn dimer was formed during catalysis on the TiO2 electrode, showing the dynamic formation of a catalytically active dimer on an electrode surface. Finally, we combined the light-protected TiO2 |MnP cathode with a CdS-sensitized photoanode to enable solar-light-driven CO2 reduction with the light-sensitive MnP catalyst.
carbon dioxide, electrocatalysis, hybrid materials, manganese, reduction
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External DOI: https://doi.org/10.1002/anie.201601038
This record's URL: https://www.repository.cam.ac.uk/handle/1810/254631