Switchable wetting of oxygen-evolving oxide catalysts
<jats:title>Abstract</jats:title><jats:p>The surface wettability of catalysts is typically controlled via surface treatments that promote catalytic performance. Here we report on potential-regulated hydrophobicity/hydrophilicity at cobalt-based oxide interfaces with an alkaline sol...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
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Springer Science and Business Media LLC
2022
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| Online Access: | https://hdl.handle.net/1721.1/139778 |
| _version_ | 1811086021723422720 |
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| author | Shen, Tzu-Hsien Spillane, Liam Peng, Jiayu Shao-Horn, Yang Tileli, Vasiliki |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Shen, Tzu-Hsien Spillane, Liam Peng, Jiayu Shao-Horn, Yang Tileli, Vasiliki |
| author_sort | Shen, Tzu-Hsien |
| collection | MIT |
| description | <jats:title>Abstract</jats:title><jats:p>The surface wettability of catalysts is typically controlled via surface treatments that promote catalytic performance. Here we report on potential-regulated hydrophobicity/hydrophilicity at cobalt-based oxide interfaces with an alkaline solution. The switchable wetting of single particles, directly related to their activity and stability towards the oxygen evolution reaction, was revealed by electrochemical liquid-phase transmission electron microscopy. Analysis of the movement of the liquid in real time revealed distinctive wettability behaviour associated with specific potential ranges. At low potentials, an overall reduction of the hydrophobicity of the oxides was probed. Upon reversible reconstruction towards the surface oxyhydroxide phase, electrowetting was found to cause a change in the interfacial capacitance. At high potentials, the evolution of molecular oxygen, confirmed by operando electron energy-loss spectroscopy, was accompanied by a globally thinner liquid layer. This work directly links the physical wetting with the chemical oxygen evolution reaction of single particles, providing fundamental insights into solid–liquid interfacial interactions of oxygen-evolving oxides.</jats:p> |
| first_indexed | 2024-09-23T13:19:39Z |
| format | Article |
| id | mit-1721.1/139778 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T13:19:39Z |
| publishDate | 2022 |
| publisher | Springer Science and Business Media LLC |
| record_format | dspace |
| spelling | mit-1721.1/1397782023-02-03T21:16:54Z Switchable wetting of oxygen-evolving oxide catalysts Shen, Tzu-Hsien Spillane, Liam Peng, Jiayu Shao-Horn, Yang Tileli, Vasiliki Massachusetts Institute of Technology. Department of Materials Science and Engineering Massachusetts Institute of Technology. Department of Mechanical Engineering Massachusetts Institute of Technology. Research Laboratory of Electronics <jats:title>Abstract</jats:title><jats:p>The surface wettability of catalysts is typically controlled via surface treatments that promote catalytic performance. Here we report on potential-regulated hydrophobicity/hydrophilicity at cobalt-based oxide interfaces with an alkaline solution. The switchable wetting of single particles, directly related to their activity and stability towards the oxygen evolution reaction, was revealed by electrochemical liquid-phase transmission electron microscopy. Analysis of the movement of the liquid in real time revealed distinctive wettability behaviour associated with specific potential ranges. At low potentials, an overall reduction of the hydrophobicity of the oxides was probed. Upon reversible reconstruction towards the surface oxyhydroxide phase, electrowetting was found to cause a change in the interfacial capacitance. At high potentials, the evolution of molecular oxygen, confirmed by operando electron energy-loss spectroscopy, was accompanied by a globally thinner liquid layer. This work directly links the physical wetting with the chemical oxygen evolution reaction of single particles, providing fundamental insights into solid–liquid interfacial interactions of oxygen-evolving oxides.</jats:p> 2022-01-27T20:15:15Z 2022-01-27T20:15:15Z 2021-12-30 2022-01-27T16:21:42Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/139778 Shen, Tzu-Hsien, Spillane, Liam, Peng, Jiayu, Shao-Horn, Yang and Tileli, Vasiliki. 2021. "Switchable wetting of oxygen-evolving oxide catalysts." Nature Catalysis. en 10.1038/s41929-021-00723-w Nature Catalysis Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/ application/pdf Springer Science and Business Media LLC Nature |
| spellingShingle | Shen, Tzu-Hsien Spillane, Liam Peng, Jiayu Shao-Horn, Yang Tileli, Vasiliki Switchable wetting of oxygen-evolving oxide catalysts |
| title | Switchable wetting of oxygen-evolving oxide catalysts |
| title_full | Switchable wetting of oxygen-evolving oxide catalysts |
| title_fullStr | Switchable wetting of oxygen-evolving oxide catalysts |
| title_full_unstemmed | Switchable wetting of oxygen-evolving oxide catalysts |
| title_short | Switchable wetting of oxygen-evolving oxide catalysts |
| title_sort | switchable wetting of oxygen evolving oxide catalysts |
| url | https://hdl.handle.net/1721.1/139778 |
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