Role of Electronic Structure on Nitrate Reduction to Ammonium: A Periodic Journey
Oregon State University · Lawrence Berkeley National Laboratory · +2 more institutions
Abstract
Electrocatalysis is a promising approach to convert waste nitrate to ammonia and help close the nitrogen cycle. This renewably powered ammonia production process sources hydrogen from water (as opposed to methane in the thermal Haber–Bosch process) but requires a delicate balance between a catalyst’s activity for the hydrogen evolution reaction (HER) and the nitrate reduction reaction (NO3RR), influencing the Faradaic efficiency (FE) and selectivity to ammonia/ammonium over other nitrogen-containing products. We measure ammonium FEs ranging from 3.6 ± 6.6% (on Ag) to 93.7 ± 0.9% (on Co) across a range of transition metals (TMs; Ti, Fe, Co, Ni, Ni0.68Cu0.32, Cu, and Ag) in buffered neutral media. To better…
Citation impact
- FWCI
- 11.94
- Percentile
- 100%
- References
- 51
Authors
7Topics & keywords
- Chemistry
- Inorganic chemistry
- Catalysis
- Ammonia
- Electrocatalyst
- Ammonia production
- Nitrate
- Ammonium