Bipyridine-Confined Silver Single-Atom Catalysts Facilitate In-Plane C-O Coupling for Propylene Electrooxidation
The electrooxidation of propylene presents a promising route for the production of 1,2-propylene glycol (PG) under ambient conditions. However, the C-O coupling process remains a challenge owing to the high energy barrier. In this work, we developed a highly efficient electrocatalyst of bipyridine-confined Ag single atoms on UiO-bpy substrates (Ag SAs/UiO-bpy), which exposed two in-plane coordination vacancies during reaction for the co-adsorption of key intermediates. Detailed structure and electronic property analyses demonstrate that CH3CHCH2OH* and *OH could stably co-adsorb in a square planar configuration, which then accelerates the charge transfer between them. The combination of stable co-adsorption and efficient charge transfer facilitates the C-O coupling process, thus significantly lowering its energy barrier. At 2.4 V versus a reversible hydrogen electrode, Ag SAs/UiO-bpy achieved a record-high activity of 61.9 gPG m-2 h-1. Our work not only presents a robust electrocatalyst but also advances a new perspective on catalyst design for propylene electrooxidation.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:24 |
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| Enthalten in: |
Nano letters - 24(2024), 5 vom: 07. Feb., Seite 1801-1807 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Chi, Mingfang [VerfasserIn] |
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| Links: |
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| Themen: |
Electrooxidation of propylene |
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| Anmerkungen: |
Date Revised 07.02.2024 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1021/acs.nanolett.3c04978 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM367680815 |
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| 520 | |a The electrooxidation of propylene presents a promising route for the production of 1,2-propylene glycol (PG) under ambient conditions. However, the C-O coupling process remains a challenge owing to the high energy barrier. In this work, we developed a highly efficient electrocatalyst of bipyridine-confined Ag single atoms on UiO-bpy substrates (Ag SAs/UiO-bpy), which exposed two in-plane coordination vacancies during reaction for the co-adsorption of key intermediates. Detailed structure and electronic property analyses demonstrate that CH3CHCH2OH* and *OH could stably co-adsorb in a square planar configuration, which then accelerates the charge transfer between them. The combination of stable co-adsorption and efficient charge transfer facilitates the C-O coupling process, thus significantly lowering its energy barrier. At 2.4 V versus a reversible hydrogen electrode, Ag SAs/UiO-bpy achieved a record-high activity of 61.9 gPG m-2 h-1. Our work not only presents a robust electrocatalyst but also advances a new perspective on catalyst design for propylene electrooxidation | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a electrooxidation of propylene | |
| 650 | 4 | |a in-plane C−O coupling | |
| 650 | 4 | |a propylene glycol | |
| 650 | 4 | |a single-atom catalysts | |
| 700 | 1 | |a Zhao, Jiankang |e verfasserin |4 aut | |
| 700 | 1 | |a Ke, Jingwen |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Yan |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Ruyang |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Chuanhao |e verfasserin |4 aut | |
| 700 | 1 | |a Hung, Sung-Fu |e verfasserin |4 aut | |
| 700 | 1 | |a Lee, Tsung-Ju |e verfasserin |4 aut | |
| 700 | 1 | |a Geng, Zhigang |e verfasserin |4 aut | |
| 700 | 1 | |a Zeng, Jie |e verfasserin |4 aut | |
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