Sustainable conversion of alkaline nitrate to ammonia at activities greater than 2 A cm−2
Central South University · State Key Laboratory of Powder Metallurgy · +6 more institutions
Abstract
Abstract Nitrate (NO 3 ‒ ) pollution poses significant threats to water quality and global nitrogen cycles. Alkaline electrocatalytic NO 3 ‒ reduction reaction (NO 3 RR) emerges as an attractive route for enabling NO 3 ‒ removal and sustainable ammonia (NH 3 ) synthesis. However, it suffers from insufficient proton (H + ) supply in high pH conditions, restricting NO 3 ‒ -to-NH 3 activity. Herein, we propose a halogen-mediated H + feeding strategy to enhance the alkaline NO 3 RR performance. Our platform achieves near-100% NH 3 Faradaic efficiency (pH = 14) with a current density of 2 A cm –2 and enables an over 99% NO 3 – -to-NH 3 conversion efficiency. We also convert NO 3 ‒ to high-purity NH 4 Cl with…
Citation impact
- FWCI
- 19.32
- Percentile
- 100%
- References
- 85
Authors
20- WLWanru Liao
Central South University, State Key Laboratory of Powder Metallurgy
- JWJun Wang
Central South University, State Key Laboratory of Powder Metallurgy
- GNGanghai Ni
Central South University, State Key Laboratory of Powder Metallurgy
- KLKang Liu
Central South University, State Key Laboratory of Powder Metallurgy
- CLChangxu Liu
University of Exeter
Topics & keywords
- Ammonia
- Nitrate
- Dissociation (chemistry)
- Chemistry
- Ammonia production
- Halogen
- Inorganic chemistry
- Desorption