Insights into Electrochemical Nitrate Reduction to Nitrogen on Metal Catalysts for Wastewater Treatment
Ministry of Education · South China University of Technology
Abstract
Electrocatalytic nitrate reduction reaction (NO3RR) to harmless nitrogen (N2) presents a viable approach for purifying NO3–-contaminated wastewater, yet most current electrocatalysts predominantly produce ammonium/ammonia (NH4+/NH3) due to challenges in facilitating N–N coupling. This study focuses on identifying metal catalysts that preferentially generate N2 and elucidating the mechanistic origins of their high selectivity. Our evaluation of 16 commercially available metals reveals that only Pb, Sn, and In demonstrated substantial N2 selectivity (79.3, 70.0, and 57.0%, respectively, under conditions of 6 h electrolysis, a current density of 10 mA/cm2, and an initial NO3–-N concentration of 100 mg/L), while…
Citation impact
- FWCI
- 14.52
- Percentile
- 100%
- References
- 59
Authors
9- WDWeijian Duan
Ministry of Education, South China University of Technology
- YLYing Li
Ministry of Education, South China University of Technology
- YOYangjie Ou
Ministry of Education, South China University of Technology
- HTHaorui Tuo
Ministry of Education, South China University of Technology
- TLTian Li
Ministry of Education, South China University of Technology
Topics & keywords
- Chemistry
- Catalysis
- Selectivity
- Nitrate
- Inorganic chemistry
- Electrolysis
- Adsorption
- Electrochemistry
- Clean water and sanitation