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Dual‐Atom Catalysts Derived from a Preorganized Covalent Organic Framework for Enhanced Electrochemical Oxygen Reduction.
- Source :
-
Angewandte Chemie International Edition . 7/3/2023, Vol. 62 Issue 27, p1-9. 9p. - Publication Year :
- 2023
-
Abstract
- Dual‐atom catalysts (DAC) are deemed as promising electrocatalysts due to the abundant active sites and adjustable electronic structure, but the fabrication of well‐defined DAC is still full of challenges. Herein, bonded Fe dual‐atom catalysts (Fe2DAC) with Fe2N6C8O2 configuration were developed through one‐step carbonization of a preorganized covalent organic framework with bimetallic Fe chelation sites (Fe2COF). The transition from Fe2COF to Fe2DAC involved the dissociation of the nanoparticles and the capture of atoms by carbon defects. Benefitting from the optimized d‐band center and enhanced adsorption of OOH* intermediates, Fe2DAC exhibited outstanding oxygen reduction activity with a half‐wave potential of 0.898 V vs. RHE. This work will guide more fabrication of dual‐atom and even cluster catalysts from preorganized COF in the future. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14337851
- Volume :
- 62
- Issue :
- 27
- Database :
- Academic Search Index
- Journal :
- Angewandte Chemie International Edition
- Publication Type :
- Academic Journal
- Accession number :
- 164586702
- Full Text :
- https://doi.org/10.1002/anie.202304412