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

0578105 - ÚFCH JH 2024 RIV CH eng J - Journal Article
Barbero, A. - Rotundo, L. - Reviglio, Ch. - Gobetto, R. - Sokolová, Romana - Fiedler, Jan - Nervi, C.
New Spectroelectrochemical Insights into Manganese and Rhenium Bipyridine Complexes as Catalysts for the Electrochemical Reduction of Carbon Dioxide.
Molecules. Roč. 28, č. 22 (2023), č. článku 7535. E-ISSN 1420-3049
Institutional support: RVO:61388955
Keywords : CO2 * spectroelectrochemistry * manganese
OECD category: Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
Impact factor: 4.6, year: 2022
Method of publishing: Open access

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.

Permanent Link: https://hdl.handle.net/11104/0347142