https://scholars.lib.ntu.edu.tw/handle/123456789/626611
標題: | Hetero-Atomic Pairs with a Distal Fe3+ -Site Boost Water Oxidation | 作者: | Zhu, Yanping Chen, Gao Chu, You-Chiuan Hsu, Chia-Shuo Wang, Jiali Tung, Ching-Wei HAO MING CHEN |
關鍵字: | Hetero-Atomic Pairs; Lewis Acidic Fe3+; Metal-Support Interaction; Operando Characterization; Water Oxidation | 公開日期: | 25-十一月-2022 | 出版社: | WILEY-V C H VERLAG GMBH | 卷: | 61 | 期: | 48 | 來源出版物: | Angewandte Chemie (International ed. in English) | 摘要: | The hetero-atomic interaction has been the subject of many investigations, due to their heterogeneity, the individual roles of the atoms are still difficult to realize. Herein, an electrocatalyst with a hetero-atomic pair confined on a tungsten phosphide (WP) substrate so that the Fe3+ -site of the pair is distal to the surface is shown to deliver an extremely low overpotential of 192 mV at 10 mA cm-2 and one of the highest oxygen production turnover frequencies (TOF) of 2.1 s-1 at 300 mV under alkaline environment for the oxygen evolution reaction (OER). Operando characterization shows the Lewis acidic Fe3+ site boosts a large population of Co4+/3+ and the deprotonation of coordinated water, allowing simultaneously enhanced electron-transfer as well as the proton-transfer. A significant contribution from the WP substrate modulates the order of hydroxide transfer in the pre-equilibrium step (PES) and rate-determining-step (RDS), leading to a remarkable OER performance. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/626611 | ISSN: | 1433-7851 | DOI: | 10.1002/anie.202211142 |
顯示於: | 化學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。