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Activation of Main‐Group Antimony Atomic Sites for Oxygen Reduction Catalysis.
- Source :
-
Angewandte Chemie International Edition . 6/27/2022, Vol. 61 Issue 26, p1-6. 6p. - Publication Year :
- 2022
-
Abstract
- The catalytic activity of main‐group metal is hard to promote because of the intrinsic lack of host d orbitals available to be combined. Herein, under the guidance of theoretical predictions, we find atom‐dispersed antimony sites (Sb−N4 moieties) can be activated to achieve high oxygen reduction reaction (ORR) activity using a functional group regulation strategy. Correspondingly, we manage to synthesize a main‐group Sb single‐atom catalysts (SACs) that comprises Sb−N4 active moieties functionalized by epoxy groups in the second microenvironment and incorporated in N‐doped graphene (Sb1/NG(O)). The electron‐rich epoxy group can adjust the electronic structure of Sb−N4 active moieties, thereby optimizing the adsorption of the intermediate. The Sb SACs are comparable to industrial Pt/C under alkaline conditions. This discovery provides new opportunities to manipulate and improve the catalytic activity of main‐group‐element electrocatalysts. [ABSTRACT FROM AUTHOR]
- Subjects :
- *OXYGEN reduction
*OXYGEN
*CATALYSIS
*CATALYTIC activity
*ANTIMONY
*BRITANNIA metal
Subjects
Details
- Language :
- English
- ISSN :
- 14337851
- Volume :
- 61
- Issue :
- 26
- Database :
- Academic Search Index
- Journal :
- Angewandte Chemie International Edition
- Publication Type :
- Academic Journal
- Accession number :
- 157549304
- Full Text :
- https://doi.org/10.1002/anie.202202200