Iron Nanoparticles on Porous Carbon Discs: Electrocatalysts with Over 30% Energy Efficiencies for the Production of Ammonia from Nitrate
Disc-shaped precursor materials (Fe-HBD) are prepared by the complexation of iron with 2,5-dihydroxy-1,4-benzoquinone. Through the carbonization of Fe-HBD at 700 °C, Fe nanoparticles on carbon disc matrixes (CD@Fe-700) are synthesized. The CD@Fe-700 with a high surface area of 424 m<sup>2</sup> g<sup>-1</sup> and micro/mesoporosity showed promising electrocatalytic performance in the nitrate reduction reaction (NO<sub>3</sub>RR) to ammonia with ammonia yield rates of 1.8-13.5 mg h<sup>-1</sup> cm<sup>-2</sup> at overpotentials of -0.2--0.6 V (vs. RHE), reaching energy efficiencies up to 32.6-34.7%.
Authors
- Kyoung Chul Ko
- Yoon Kee Kim (ORCID: https://orcid.org/0009-0007-6824-8204)
- Uk Sim (ORCID: https://orcid.org/0000-0001-7767-495X)
- Seung Uk Son (ORCID: https://orcid.org/0000-0002-4779-9302)
- Subramani Surendran (ORCID: https://orcid.org/0000-0003-0750-3199)
- Hyojung Lim (ORCID: https://orcid.org/0009-0007-5287-2993)
- D.-W. Park
- Chang Wan Kang (ORCID: https://orcid.org/0000-0001-8153-8248)
- Jinuk Choi (ORCID: https://orcid.org/0000-0002-2070-8466)
- Tae‐Yong An
- Jina Park (ORCID: https://orcid.org/0000-0003-1319-9410)
- Jaesool Shim
- So Young Park (ORCID: https://orcid.org/0009-0000-9842-8256)
Institutions
- Chonnam National University (KR)
- Gwangju National University of Education (KR)
- Institut Néel (FR)
- Korea Institute of Science and Technology (KR)
- Sungkyunkwan University (KR)
Publication Details
- Journal
- Advanced Science
- Published
- 2025-09-29
- DOI
- https://doi.org/10.1002/advs.202514504
- Citations
- 1
- Primary Topic
- Ammonia Synthesis and Nitrogen Reduction
- Type
- article
- Field-Weighted Citation Impact
- 0.39