In situ FTIR study of CO2 reduction on inorganic analogues of carbon monoxide dehydrogenase
| Autor: | Norio Kitadai, Ji Eun Lee, Akira Yamaguchi, Ryuhei Nakamura, Masahiro Miyauchi, Tomohiro Kazami, Hideshi Ooka |
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| Rok vydání: | 2021 |
| Předmět: |
In situ
Reaction mechanism biology Violarite Chemistry Carbon fixation Metals and Alloys General Chemistry Reaction intermediate engineering.material Electrochemistry Photochemistry Catalysis Surfaces Coatings and Films Electronic Optical and Magnetic Materials Abiogenesis Materials Chemistry Ceramics and Composites engineering biology.protein Carbon monoxide dehydrogenase |
| Zdroj: | Chemical Communications. 57:3267-3270 |
| ISSN: | 1364-548X 1359-7345 |
| DOI: | 10.1039/d0cc07318k |
| Popis: | The CO2-to-CO reduction by carbon monoxide dehydrogenase (CODH) with a [NiFe4S4] cluster is considered to be the oldest pathway of biological carbon fixation and therefore may have been involved in the origin of life. Although previous studies have investigated CO2 reduction by Fe and Ni sulfides to identify the prebiotic origin of the [NiFe4S4] cluster, the reaction mechanism remains largely elusive. Herein, we applied in situ electrochemical ATR-FTIR spectroscopy to probe the reaction intermediates of greigite (Fe3S4) and violarite (FeNi2S4). Intermediate species assignable to surface-bound CO2 and formyl groups were found to be stabilized in the presence of Ni, lending insight into its role in enhancing the multistep CO2 reduction process. |
| Databáze: | OpenAIRE |
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