Redox-tunable isoindigos for electrochemically mediated carbon capture
Abstract Efficient CO2 separation technologies are essential for mitigating climate change. Compared to traditional thermochemical methods, electrochemically mediated carbon capture using redox-tunable sorbents emerges as a promising alternative due to its versatility and energy efficiency. However,...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2024-02-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-45410-z |
| _version_ | 1797274073871417344 |
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| author | Xing Li Xunhua Zhao Lingyu Zhang Anmol Mathur Yu Xu Zhiwei Fang Luo Gu Yuanyue Liu Yayuan Liu |
| author_facet | Xing Li Xunhua Zhao Lingyu Zhang Anmol Mathur Yu Xu Zhiwei Fang Luo Gu Yuanyue Liu Yayuan Liu |
| author_sort | Xing Li |
| collection | DOAJ |
| description | Abstract Efficient CO2 separation technologies are essential for mitigating climate change. Compared to traditional thermochemical methods, electrochemically mediated carbon capture using redox-tunable sorbents emerges as a promising alternative due to its versatility and energy efficiency. However, the undesirable linear free-energy relationship between redox potential and CO2 binding affinity in existing chemistry makes it fundamentally challenging to optimise key sorbent properties independently via chemical modifications. Here, we demonstrate a design paradigm for electrochemically mediated carbon capture sorbents, which breaks the undesirable scaling relationship by leveraging intramolecular hydrogen bonding in isoindigo derivatives. The redox potentials of isoindigos can be anodically shifted by >350 mV to impart sorbents with high oxygen stability without compromising CO2 binding, culminating in a system with minimised parasitic reactions. With the synthetic space presented, our effort provides a generalisable strategy to finetune interactions between redox-active organic molecules and CO2, addressing a longstanding challenge in developing effective carbon capture methods driven by non-conventional stimuli. |
| first_indexed | 2024-03-07T14:54:08Z |
| format | Article |
| id | doaj.art-1199336b174c4292add5840131fca3f0 |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-03-07T14:54:08Z |
| publishDate | 2024-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj.art-1199336b174c4292add5840131fca3f02024-03-05T19:31:48ZengNature PortfolioNature Communications2041-17232024-02-0115111310.1038/s41467-024-45410-zRedox-tunable isoindigos for electrochemically mediated carbon captureXing Li0Xunhua Zhao1Lingyu Zhang2Anmol Mathur3Yu Xu4Zhiwei Fang5Luo Gu6Yuanyue Liu7Yayuan Liu8Department of Chemical and Biomolecular Engineering, Johns Hopkins UniversityDepartment of Mechanical Engineering & Texas Materials Institute, The University of Texas at AustinDepartment of Chemical and Biomolecular Engineering, Johns Hopkins UniversityDepartment of Chemical and Biomolecular Engineering, Johns Hopkins UniversityDepartment of Chemical and Biomolecular Engineering, Johns Hopkins UniversityDepartment of Materials Science and Engineering, Johns Hopkins UniversityDepartment of Materials Science and Engineering, Johns Hopkins UniversityDepartment of Mechanical Engineering & Texas Materials Institute, The University of Texas at AustinDepartment of Chemical and Biomolecular Engineering, Johns Hopkins UniversityAbstract Efficient CO2 separation technologies are essential for mitigating climate change. Compared to traditional thermochemical methods, electrochemically mediated carbon capture using redox-tunable sorbents emerges as a promising alternative due to its versatility and energy efficiency. However, the undesirable linear free-energy relationship between redox potential and CO2 binding affinity in existing chemistry makes it fundamentally challenging to optimise key sorbent properties independently via chemical modifications. Here, we demonstrate a design paradigm for electrochemically mediated carbon capture sorbents, which breaks the undesirable scaling relationship by leveraging intramolecular hydrogen bonding in isoindigo derivatives. The redox potentials of isoindigos can be anodically shifted by >350 mV to impart sorbents with high oxygen stability without compromising CO2 binding, culminating in a system with minimised parasitic reactions. With the synthetic space presented, our effort provides a generalisable strategy to finetune interactions between redox-active organic molecules and CO2, addressing a longstanding challenge in developing effective carbon capture methods driven by non-conventional stimuli.https://doi.org/10.1038/s41467-024-45410-z |
| spellingShingle | Xing Li Xunhua Zhao Lingyu Zhang Anmol Mathur Yu Xu Zhiwei Fang Luo Gu Yuanyue Liu Yayuan Liu Redox-tunable isoindigos for electrochemically mediated carbon capture Nature Communications |
| title | Redox-tunable isoindigos for electrochemically mediated carbon capture |
| title_full | Redox-tunable isoindigos for electrochemically mediated carbon capture |
| title_fullStr | Redox-tunable isoindigos for electrochemically mediated carbon capture |
| title_full_unstemmed | Redox-tunable isoindigos for electrochemically mediated carbon capture |
| title_short | Redox-tunable isoindigos for electrochemically mediated carbon capture |
| title_sort | redox tunable isoindigos for electrochemically mediated carbon capture |
| url | https://doi.org/10.1038/s41467-024-45410-z |
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