Integrated electrocatalytic synthesis of ammonium nitrate from dilute NO gas on metal organic frameworks-modified gas diffusion electrodes
Abstract The electrocatalytic conversion of NO offers a promising technology for not only removing the air pollutant but also synthesizing valuable chemicals. We design an integrated-electrocatalysis cell featuring metal organic framework (MOF)-modified gas diffusion electrodes for simultaneous capt...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-08-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-51256-2 |
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| author | Donglai Pan Muthu Austeria P Shinbi Lee Ho-sub Bae Fei He Geun Ho Gu Wonyong Choi |
| author_facet | Donglai Pan Muthu Austeria P Shinbi Lee Ho-sub Bae Fei He Geun Ho Gu Wonyong Choi |
| author_sort | Donglai Pan |
| collection | DOAJ |
| description | Abstract The electrocatalytic conversion of NO offers a promising technology for not only removing the air pollutant but also synthesizing valuable chemicals. We design an integrated-electrocatalysis cell featuring metal organic framework (MOF)-modified gas diffusion electrodes for simultaneous capture of NO and generation of NH4NO3 under low-concentration NO flow conditions. Using 2% NO gas, the modified cathode exhibits a higher NH4 + yield and Faradaic efficiency than an unmodified cathode. Notably, the modified cathode shows a twofold increase in NH4 + production with 20 ppm NO gas supply. Theoretical calculations predict favorable transfer of adsorbed NO from the adsorption layer to the catalyst layer, which is experimentally confirmed by enhanced NO mass transfer from gas to electrolyte across the modified electrode. The adsorption layer-modified anode also exhibits a higher NO3 − yield for NO electro-oxidation compared to the unmodified electrode under low NO concentration flow. Among various integrated-cell configurations, a single-chamber setup produces a higher NH4NO3 yield than a double-chamber setup. Furthermore, a higher NO utilization efficiency is obtained with a single-gasline operation mode, where the NO-containing gas flows sequentially from the cathode to the anode. |
| format | Article |
| id | doaj-art-c4857998e49146539c25a87d66f5fe87 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2024-08-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-c4857998e49146539c25a87d66f5fe872025-02-09T12:43:52ZengNature PortfolioNature Communications2041-17232024-08-0115111510.1038/s41467-024-51256-2Integrated electrocatalytic synthesis of ammonium nitrate from dilute NO gas on metal organic frameworks-modified gas diffusion electrodesDonglai Pan0Muthu Austeria P1Shinbi Lee2Ho-sub Bae3Fei He4Geun Ho Gu5Wonyong Choi6Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH)Department of Energy Engineering, Korea Institute of Energy Technology (KENTECH)Department of Energy Engineering, Korea Institute of Energy Technology (KENTECH)Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH)Department of Energy Engineering, Korea Institute of Energy Technology (KENTECH)Department of Energy Engineering, Korea Institute of Energy Technology (KENTECH)Department of Energy Engineering, Korea Institute of Energy Technology (KENTECH)Abstract The electrocatalytic conversion of NO offers a promising technology for not only removing the air pollutant but also synthesizing valuable chemicals. We design an integrated-electrocatalysis cell featuring metal organic framework (MOF)-modified gas diffusion electrodes for simultaneous capture of NO and generation of NH4NO3 under low-concentration NO flow conditions. Using 2% NO gas, the modified cathode exhibits a higher NH4 + yield and Faradaic efficiency than an unmodified cathode. Notably, the modified cathode shows a twofold increase in NH4 + production with 20 ppm NO gas supply. Theoretical calculations predict favorable transfer of adsorbed NO from the adsorption layer to the catalyst layer, which is experimentally confirmed by enhanced NO mass transfer from gas to electrolyte across the modified electrode. The adsorption layer-modified anode also exhibits a higher NO3 − yield for NO electro-oxidation compared to the unmodified electrode under low NO concentration flow. Among various integrated-cell configurations, a single-chamber setup produces a higher NH4NO3 yield than a double-chamber setup. Furthermore, a higher NO utilization efficiency is obtained with a single-gasline operation mode, where the NO-containing gas flows sequentially from the cathode to the anode.https://doi.org/10.1038/s41467-024-51256-2 |
| spellingShingle | Donglai Pan Muthu Austeria P Shinbi Lee Ho-sub Bae Fei He Geun Ho Gu Wonyong Choi Integrated electrocatalytic synthesis of ammonium nitrate from dilute NO gas on metal organic frameworks-modified gas diffusion electrodes Nature Communications |
| title | Integrated electrocatalytic synthesis of ammonium nitrate from dilute NO gas on metal organic frameworks-modified gas diffusion electrodes |
| title_full | Integrated electrocatalytic synthesis of ammonium nitrate from dilute NO gas on metal organic frameworks-modified gas diffusion electrodes |
| title_fullStr | Integrated electrocatalytic synthesis of ammonium nitrate from dilute NO gas on metal organic frameworks-modified gas diffusion electrodes |
| title_full_unstemmed | Integrated electrocatalytic synthesis of ammonium nitrate from dilute NO gas on metal organic frameworks-modified gas diffusion electrodes |
| title_short | Integrated electrocatalytic synthesis of ammonium nitrate from dilute NO gas on metal organic frameworks-modified gas diffusion electrodes |
| title_sort | integrated electrocatalytic synthesis of ammonium nitrate from dilute no gas on metal organic frameworks modified gas diffusion electrodes |
| url | https://doi.org/10.1038/s41467-024-51256-2 |
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