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Graphdiyne-based metal atomic catalysts for synthesizing ammonia.
- Source :
- National Science Review; Aug2021, Vol. 8 Issue 8, p1-10, 10p
- Publication Year :
- 2021
-
Abstract
- Development of novel catalysts for nitrogen reduction at ambient pressures and temperatures with ultrahigh ammonia (NH<subscript>3</subscript>) yield and selectivity is challenging. In this work, an atomic catalyst with separated Pd atoms on graphdiyne (Pd-GDY) was synthesized, which shows fascinating electrocatalytic properties for nitrogen reduction. The catalyst has the highest average NH<subscript>3</subscript> yield of 4.45 ± 0.30 mg<subscript>NH3</subscript> mg<subscript>Pd</subscript><superscript>ā1</superscript> h<superscript>ā1</superscript>, almost tens of orders larger than for previously reported catalysts, and 100% reaction selectivity in neutral media. Pd-GDY exhibits almost no decreases in NH<subscript>3</subscript> yield and Faradaic efficiency. Density functional theory calculations show that the reaction pathway prefers to perform at the (Pd, C1, C2) active area because of the strongly coupled (Pd, C1, C2), which elevates the selectivity via enhanced electron transfer. By adjusting the pād coupling accurately, reduction of self-activated nitrogen is promoted by anchoring atom selection, and side effects are minimized. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20955138
- Volume :
- 8
- Issue :
- 8
- Database :
- Complementary Index
- Journal :
- National Science Review
- Publication Type :
- Academic Journal
- Accession number :
- 151912121
- Full Text :
- https://doi.org/10.1093/nsr/nwaa213