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Light-driven H2O2 production over redox-active imine-linked covalent organic frameworks
- Source :
- Advanced Powder Materials, Vol 3, Iss 2, Pp 100179- (2024)
- Publication Year :
- 2024
- Publisher :
- KeAi Communications Co. Ltd., 2024.
-
Abstract
- Imine-linked covalent organic frameworks (COFs) provide distinctive prospects for promoting photocatalytic H2O2 production, yet the intricate involvement of imine-derived linkages chemistry under light irradiation remains incompletely elucidated. Here, imine-linked COF-LZU1 demonstrates a visible light-driven H2O2 evolution rate of 387 μmol g−1 h−1, particularly, negligible dependence on the sacrificial agents. By virtue of electron paramagnetic spectroscopy and solid-state nuclear magnetic resonance, we experimentally tracked the structure evolution and identified its autooxidation to Wurster's salt mimics under the photocatalytic conditioning. This finding coincides with the radical anion ·O2− governed reaction pathway and is further rationalized with additional theoretical calculations. This study provides insights into both photophysical/photochemical aspects over the imine-linkage structure.
Details
- Language :
- English
- ISSN :
- 2772834X
- Volume :
- 3
- Issue :
- 2
- Database :
- Directory of Open Access Journals
- Journal :
- Advanced Powder Materials
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.0549583839af4fb2aca9e994b8a407b7
- Document Type :
- article
- Full Text :
- https://doi.org/10.1016/j.apmate.2024.100179