New Spectroelectrochemical Insights into Manganese and Rhenium Bipyridine Complexes as Catalysts for the Electrochemical Reduction of Carbon Dioxide

This study aimed to demonstrate the behavior of different complexes using IR spectroelectrochemistry (SEC), a technique that combines IR spectroscopy with electrochemistry. Four different Mn and Re catalysts for electrochemical CO2 reduction were studied in dry acetonitrile. In the case of Mn(apbpy)...

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Bibliographic Details
Published in:Molecules (Basel, Switzerland) Vol. 28; no. 22; p. 7535
Main Authors: Barbero, Alice, Rotundo, Laura, Reviglio, Chiara, Gobetto, Roberto, Sokolova, Romana, Fiedler, Jan, Nervi, Carlo
Format: Journal Article
Language:English
Published: Basel MDPI AG 01.11.2023
MDPI
Subjects:
BASIC BIOLOGICAL SCIENCES
biochemistry & molecular biology
Carbon dioxide
carbon dioxide reduction
Catalysts
chemistry
CO2
Electrons
Energy
Experiments
INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Ligands
manganese
Photovoltaic cells
rhenium
spectroelectrochemistry
Voltammetry
ISSN:1420-3049, 1420-3049
Online Access:Get full text
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Summary:This study aimed to demonstrate the behavior of different complexes using IR spectroelectrochemistry (SEC), a technique that combines IR spectroscopy with electrochemistry. Four different Mn and Re catalysts for electrochemical CO2 reduction were studied in dry acetonitrile. In the case of Mn(apbpy)(CO)3Br (apbpy = 4(4-aminophenyl)-2,2′-bipyridine), SEC suggested that a very slow catalytic reduction of CO2 also occurs in acetonitrile in the absence of proton donors, but at rather negative potentials. In contrast, the corresponding Re(apbpy)(CO)3Br clearly demonstrated slow catalytic conversion at the first reduction potential. Switching to saturated CO2 solutions in a mixture of acetonitrile and 5% water as a proton donor, the SEC of Mn(apbpy)(CO)3Br displayed a faster catalytic behavior.
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SC0012704; 2022FWAF2M; CMPT200224; 61388955
USDOE Office of Science (SC)
Czech Academy of Sciences
Interuniversitary Consortium of Chemical Reactivity and Catalysis (CIRCC)
National Institutes of Health (NIH)
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules28227535