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 CO<sub>2</sub> reduction were studied in dry acetonitrile. I...
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MDPI AG
2023-11-01
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author | Alice Barbero Laura Rotundo Chiara Reviglio Roberto Gobetto Romana Sokolova Jan Fiedler Carlo Nervi |
author_facet | Alice Barbero Laura Rotundo Chiara Reviglio Roberto Gobetto Romana Sokolova Jan Fiedler Carlo Nervi |
author_sort | Alice Barbero |
collection | DOAJ |
description | 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 CO<sub>2</sub> reduction were studied in dry acetonitrile. In the case of Mn(apbpy)(CO)<sub>3</sub>Br (apbpy = 4(4-aminophenyl)-2,2′-bipyridine), SEC suggested that a very slow catalytic reduction of CO<sub>2</sub> also occurs in acetonitrile in the absence of proton donors, but at rather negative potentials. In contrast, the corresponding Re(apbpy)(CO)<sub>3</sub>Br clearly demonstrated slow catalytic conversion at the first reduction potential. Switching to saturated CO<sub>2</sub> solutions in a mixture of acetonitrile and 5% water as a proton donor, the SEC of Mn(apbpy)(CO)<sub>3</sub>Br displayed a faster catalytic behavior. |
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spelling | doaj.art-4ac9ba7eb58f480bacc3a489d239c1cb2023-11-24T14:58:09ZengMDPI AGMolecules1420-30492023-11-012822753510.3390/molecules28227535New Spectroelectrochemical Insights into Manganese and Rhenium Bipyridine Complexes as Catalysts for the Electrochemical Reduction of Carbon DioxideAlice Barbero0Laura Rotundo1Chiara Reviglio2Roberto Gobetto3Romana Sokolova4Jan Fiedler5Carlo Nervi6Department of Chemistry, University of Torino, Via P. Giuria 7, 10125 Torino, ItalyDepartment of Chemistry, University of Torino, Via P. Giuria 7, 10125 Torino, ItalyDepartment of Chemistry, University of Torino, Via P. Giuria 7, 10125 Torino, ItalyDepartment of Chemistry, University of Torino, Via P. Giuria 7, 10125 Torino, ItalyJ. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 3, 18223 Prague, Czech RepublicJ. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 3, 18223 Prague, Czech RepublicDepartment of Chemistry, University of Torino, Via P. Giuria 7, 10125 Torino, ItalyThis 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 CO<sub>2</sub> reduction were studied in dry acetonitrile. In the case of Mn(apbpy)(CO)<sub>3</sub>Br (apbpy = 4(4-aminophenyl)-2,2′-bipyridine), SEC suggested that a very slow catalytic reduction of CO<sub>2</sub> also occurs in acetonitrile in the absence of proton donors, but at rather negative potentials. In contrast, the corresponding Re(apbpy)(CO)<sub>3</sub>Br clearly demonstrated slow catalytic conversion at the first reduction potential. Switching to saturated CO<sub>2</sub> solutions in a mixture of acetonitrile and 5% water as a proton donor, the SEC of Mn(apbpy)(CO)<sub>3</sub>Br displayed a faster catalytic behavior.https://www.mdpi.com/1420-3049/28/22/7535CO<sub>2</sub>spectroelectrochemistrymanganeserheniumcarbon dioxide reduction |
spellingShingle | Alice Barbero Laura Rotundo Chiara Reviglio Roberto Gobetto Romana Sokolova Jan Fiedler Carlo Nervi New Spectroelectrochemical Insights into Manganese and Rhenium Bipyridine Complexes as Catalysts for the Electrochemical Reduction of Carbon Dioxide Molecules CO<sub>2</sub> spectroelectrochemistry manganese rhenium carbon dioxide reduction |
title | New Spectroelectrochemical Insights into Manganese and Rhenium Bipyridine Complexes as Catalysts for the Electrochemical Reduction of Carbon Dioxide |
title_full | New Spectroelectrochemical Insights into Manganese and Rhenium Bipyridine Complexes as Catalysts for the Electrochemical Reduction of Carbon Dioxide |
title_fullStr | New Spectroelectrochemical Insights into Manganese and Rhenium Bipyridine Complexes as Catalysts for the Electrochemical Reduction of Carbon Dioxide |
title_full_unstemmed | New Spectroelectrochemical Insights into Manganese and Rhenium Bipyridine Complexes as Catalysts for the Electrochemical Reduction of Carbon Dioxide |
title_short | New Spectroelectrochemical Insights into Manganese and Rhenium Bipyridine Complexes as Catalysts for the Electrochemical Reduction of Carbon Dioxide |
title_sort | new spectroelectrochemical insights into manganese and rhenium bipyridine complexes as catalysts for the electrochemical reduction of carbon dioxide |
topic | CO<sub>2</sub> spectroelectrochemistry manganese rhenium carbon dioxide reduction |
url | https://www.mdpi.com/1420-3049/28/22/7535 |
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