Efficient Electroreduction of Nitrate into Ammonia at Ultralow Concentrations Via an Enrichment Effect
University of Science and Technology of China · Chinese Academy of Sciences · +2 more institutions
Abstract
Abstract The electroreduction of nitrate (NO 3 − ) pollutants to ammonia (NH 3 ) offers an alternative approach for both wastewater treatment and NH 3 synthesis. Numerous electrocatalysts have been reported for the electroreduction of NO 3 − to NH 3 , but most of them demonstrate poor performance at ultralow NO 3 − concentrations. In this study, a Cu‐based catalyst for electroreduction of NO 3 − at ultralow concentrations is developed by encapsulating Cu nanoparticles in a porous carbon framework (Cu@C). At −0.3 V vs reversible hydrogen electrode (RHE), Cu@C achieves Faradaic efficiency for NH 3 of 72.0% with 1 × 10 −3 m NO 3 − , which is 3.6 times higher than that of Cu nanoparticles. Notably, at −0.9 V vs…
Citation impact
- FWCI
- 12.97
- Percentile
- 100%
- References
- 34
Authors
6- ZSZhimin Song
University of Science and Technology of China, Chinese Academy of Sciences, Hefei Institutes of Physical Science, Southern University of Science and Technology
- YLYan Liu
University of Science and Technology of China, Chinese Academy of Sciences, Hefei Institutes of Physical Science
- YZYongzhi Zhong
University of Science and Technology of China, Chinese Academy of Sciences, Hefei Institutes of Physical Science
- QGQing Guo
Southern University of Science and Technology
- JZJie Zeng
University of Science and Technology of China, Chinese Academy of Sciences, Hefei Institutes of Physical Science
Topics & keywords
- Ammonia
- Catalysis
- Nitrate
- Reversible hydrogen electrode
- Materials science
- Inorganic chemistry
- Electrochemistry
- Electrocatalyst
- Clean water and sanitation
Funding
- NNNational Natural Science Foundation of ChinaAwards: 92061111, U19A2015, U1932146
- NKNational Key Research and Development Program of ChinaAwards: 2021YFA1500500, 2019YFA0405600
- FRFundamental Research Funds for the Central Universities
- NSNational Science Fund for Distinguished Young ScholarsAward: 21925204