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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Main Authors: Alice Barbero, Laura Rotundo, Chiara Reviglio, Roberto Gobetto, Romana Sokolova, Jan Fiedler, Carlo Nervi
Format: Article
Language:English
Published: MDPI AG 2023-11-01
Series:Molecules
Subjects:
Online Access:https://www.mdpi.com/1420-3049/28/22/7535
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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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