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Atomically Dispersed Indium‐Copper Dual‐Metal Active Sites Promoting C−C Coupling for CO2 Photoreduction to Ethanol.
- Source :
- Angewandte Chemie International Edition; 10/4/2022, Vol. 61 Issue 40, p1-10, 10p
- Publication Year :
- 2022
-
Abstract
- Photoreduction of CO2 to C2+ solar fuel is a promising carbon‐neutral technology for renewable energy. This strategy is challenged by its low productivity due to low efficiency in multielectron utilization and slow C−C coupling kinetics. This work reports a dual‐metal photocatalyst consisting of atomically dispersed indium and copper anchored on polymeric carbon nitride (InCu/PCN), on which the photoreduction of CO2 delivered an excellent ethanol production rate of 28.5 μmol g−1 h−1 with a high selectivity of 92 %. Coupled experimental investigation and DFT calculations reveal the following mechanisms underpinning the high performance of this catalyst. Essentially, the In−Cu interaction enhances the charge separation by accelerating charge transfer from PCN to the metal sites. Indium also transfers electrons to neighboring copper via Cu−N−In bridges, increasing the electron density of copper active sites. Furthermore, In−Cu dual‐metal sites promote the adsorption of *CO intermediates and lower the energy barrier of C−C coupling. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14337851
- Volume :
- 61
- Issue :
- 40
- Database :
- Complementary Index
- Journal :
- Angewandte Chemie International Edition
- Publication Type :
- Academic Journal
- Accession number :
- 159326254
- Full Text :
- https://doi.org/10.1002/anie.202208904