Boosting Electrocatalytic Ethylene Epoxidation by Single Atom Modulation
© 2024 Wiley‐VCH GmbH..
The electrochemical synthesis of ethylene oxide (EO) using ethylene and water under ambient conditions presents a low-carbon alternative to existing industrial production process. Yet, the electrocatalytic ethylene epoxidation route is currently hindered by largely insufficient activity, EO selectivity, and long-term stability. Here we report a single atom Ru-doped hollandite structure KIr4O8 (KIrRuO) nanowire catalyst for efficient EO production via a chloride-mediated ethylene epoxidation process. The KIrRuO catalyst exhibits an EO partial current density up to 0.7 A cm-2 and an EO yield as high as 92.0 %. The impressive electrocatalytic performance towards ethylene epoxidation is ascribed to the modulation of electronic structures of adjacent Ir sites by single Ru atoms, which stabilizes the *CH2CH2OH intermediate and facilitates the formation of active Cl2 species during the generation of 2-chloroethanol, the precursor of EO. This work provides a single atom modulation strategy for improving the reactivity of adjacent metal sites in heterogeneous electrocatalysts.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - year:2024 |
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| Enthalten in: |
Angewandte Chemie (International ed. in English) - (2024) vom: 21. März, Seite e202402950 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Wang, Hanyu [VerfasserIn] |
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| Links: |
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| Themen: |
Electrocatalysis |
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| Anmerkungen: |
Date Revised 10.04.2024 published: Print-Electronic Citation Status Publisher |
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| doi: |
10.1002/anie.202402950 |
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| funding: |
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NLM37001684X |
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| 520 | |a © 2024 Wiley‐VCH GmbH. | ||
| 520 | |a The electrochemical synthesis of ethylene oxide (EO) using ethylene and water under ambient conditions presents a low-carbon alternative to existing industrial production process. Yet, the electrocatalytic ethylene epoxidation route is currently hindered by largely insufficient activity, EO selectivity, and long-term stability. Here we report a single atom Ru-doped hollandite structure KIr4O8 (KIrRuO) nanowire catalyst for efficient EO production via a chloride-mediated ethylene epoxidation process. The KIrRuO catalyst exhibits an EO partial current density up to 0.7 A cm-2 and an EO yield as high as 92.0 %. The impressive electrocatalytic performance towards ethylene epoxidation is ascribed to the modulation of electronic structures of adjacent Ir sites by single Ru atoms, which stabilizes the *CH2CH2OH intermediate and facilitates the formation of active Cl2 species during the generation of 2-chloroethanol, the precursor of EO. This work provides a single atom modulation strategy for improving the reactivity of adjacent metal sites in heterogeneous electrocatalysts | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Electrocatalysis | |
| 650 | 4 | |a Electrosynthesis | |
| 650 | 4 | |a Ethylene epoxidation | |
| 650 | 4 | |a Ethylene oxide | |
| 650 | 4 | |a Single atom catalyst | |
| 700 | 1 | |a Wang, Shuo |e verfasserin |4 aut | |
| 700 | 1 | |a Song, Yanpeng |e verfasserin |4 aut | |
| 700 | 1 | |a Zhao, Yang |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Zhenyu |e verfasserin |4 aut | |
| 700 | 1 | |a Shen, Yuxiang |e verfasserin |4 aut | |
| 700 | 1 | |a Peng, Zhangquan |e verfasserin |4 aut | |
| 700 | 1 | |a Gao, Dunfeng |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Guoxiong |e verfasserin |4 aut | |
| 700 | 1 | |a Bao, Xinhe |e verfasserin |4 aut | |
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