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Cross‐Linked Polyphosphazene Hollow Nanosphere‐Derived N/P‐Doped Porous Carbon with Single Nonprecious Metal Atoms for the Oxygen Reduction Reaction.
- Source :
-
Angewandte Chemie . 8/17/2020, Vol. 132 Issue 34, p14747-14754. 8p. - Publication Year :
- 2020
-
Abstract
- Heteroatom‐doped polymers or carbon nanospheres have attracted broad research interest. However, rational synthesis of these nanospheres with controllable properties is still a great challenge. Herein, we develop a template‐free approach to construct cross‐linked polyphosphazene nanospheres with tunable hollow structures. As comonomers, hexachlorocyclotriphosphazene provides N and P atoms, tannic acid can coordinate with metal ions, and the replaceable third comonomer can endow the materials with various properties. After carbonization, N/P‐doped mesoporous carbon nanospheres were obtained with small particle size (≈50 nm) and high surface area (411.60 m2 g−1). Structural characterization confirmed uniform dispersion of the single atom transition metal sites (i.e. Co‐N2P2) with N and P dual coordination. Electrochemical measurements and theoretical simulations revealed the oxygen reduction reaction performance. This work provides a solution for fabricating diverse heteroatom‐containing polymer nanospheres and their derived single metal atom doped carbon catalysts. [ABSTRACT FROM AUTHOR]
- Subjects :
- *POROUS metals
*ATOMS
*TANNINS
*METALS
*TRANSITION metals
*CARBON
Subjects
Details
- Language :
- English
- ISSN :
- 00448249
- Volume :
- 132
- Issue :
- 34
- Database :
- Academic Search Index
- Journal :
- Angewandte Chemie
- Publication Type :
- Academic Journal
- Accession number :
- 145043871
- Full Text :
- https://doi.org/10.1002/ange.202006175