Eum, Heesung CHEONG, SEOK HYEON Jiyun Kim Han, Seojung Cheong, M. LEE, HYUN JOO Lee, H.-S. Lee, Dong Ki 2024-01-19T13:01:57Z 2024-01-19T13:01:57Z 2022-01-28 2022-01 2073-4344 https://pubs.kist.re.kr/handle/201004/115867 The removal of nitric oxide (NO), which is an aggregation agent for fine dust that causes air pollution, from exhaust gas has been considered an important treatment in the context of environmental conservation. Herein, we propose a sustainable electrochemical NO removal system based on the reversible Fe2+ /Fe3+-ethylenediamine tetraacetic acid (EDTA) redox reaction, which enables continuous NO capture and storage at ambient temperature without the addition of any sacrificial agents. We have designed a flow-type reaction system in which the NO absorption and emission can be separately conducted in the individual reservoirs of the catholyte and anolyte with the continuous regeneration of Fe2+-EDTA by the electrochemical reduction in Fe3+-EDTA. A continuous flow reaction using a silver cathode and glassy carbon anode showed that the concentrations of Fe2+ and Fe3+-EDTA in the electrolyte were successfully maintained at a 1:1 ratio, which demonstrates that the proposed system can be applied for continuous NO capture and storage. ？ 2022 by the authors. Licensee MDPI, Basel, Switzerland. English Multidisciplinary Digital Publishing Institute (MDPI) Sustainable Electrochemical NO Capture and Storage System Based on the Reversible Fe2+ /Fe3+-EDTA Redox Reaction Article 10.3390/catal12010079 1 Catalysts, v.12, no.1 Catalysts 12 1 Y scie scopus 000757676100001 2-s2.0-85122671545 Chemistry, Physical Chemistry Article SELECTIVE CATALYTIC-REDUCTION ROOM-TEMPERATURE NITROGEN-OXIDES NITRIC-OXIDE REMOVAL ABSORPTION COMPLEX GASES SO2 CO2 Gas removal NO Electrochemistry Fe-EDTA Flow-cell