Accelerating Electron-Transfer Dynamics by TiO2 -Immobilized Reversible Single-Atom Copper for Enhanced Artificial Photosynthesis of Urea
© 2022 Wiley-VCH GmbH.
| Veröffentlicht in: | Advanced materials (Deerfield Beach, Fla.). - 1998. - 34(2022), 51 vom: 10. Dez., Seite e2207793 |
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| 1. Verfasser: | |
| Weitere Verfasser: | , , , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2022
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| Zugriff auf das übergeordnete Werk: | Advanced materials (Deerfield Beach, Fla.) |
| Schlagworte: | Journal Article electron-transfer dynamics photocatalysis reversible variation single-atom copper urea synthesis Copper 789U1901C5 titanium dioxide 15FIX9V2JP mehr... |
| Zusammenfassung: | © 2022 Wiley-VCH GmbH. Photocatalysis as a sustainable technology is expected to provide a novel sight for the green synthesis of urea directly using N2 , CO2 , and H2 O under mild conditions. However, the fundamental issue of inefficient electron transfer in photocatalysis strongly hinders its feasibility, especially for the above multi-electron-demanding urea synthesis. Herein, an effective strategy of accelerating electron-transfer dynamics is reported by TiO2 -immobilized reversible single-atom copper (denoted as Cu SA-TiO2 ) to enhance the performance for photosynthesis of urea from N2 , CO2 , and H2 O. As revealed by a series of quasi-in-situ characterizations (e.g., electron paramagnetic resonance, and wavelength-resolved and femtosecond time-resolved spectroscopies), the expedited dynamics behaviors originating from reversible single-atom copper in as-designed Cu SA-TiO2 (electron extraction rate: over 30 times faster than the reference photocatalysts) allow the assurance of abundant and continual photogenerated electrons for multi-electron-demanding co-photoactivation of N2 and CO2 , resulting in considerable rates of urea production. The strategy above for improving the photoelectron-extraction ability of photocatalysts will offer a high-efficiency and promising route for artificial urea photosynthesis and other multi-electron-demanding photocatalytic reactions |
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| Beschreibung: | Date Completed 26.12.2022 Date Revised 26.12.2022 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1521-4095 |
| DOI: | 10.1002/adma.202207793 |