Electrochemical nitrate reduction in acid enables high-efficiency ammonia synthesis and high-voltage pollutes-based fuel cells
Abstract Most current research is devoted to electrochemical nitrate reduction reaction for ammonia synthesis under alkaline/neutral media while the investigation of nitrate reduction under acidic conditions is rarely reported. In this work, we demonstrate the potential of TiO2 nanosheet with intrin...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-12-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-023-43897-6 |
| _version_ | 1797397915113619456 |
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| author | Rong Zhang Chuan Li Huilin Cui Yanbo Wang Shaoce Zhang Pei Li Yue Hou Ying Guo Guojin Liang Zhaodong Huang Chao Peng Chunyi Zhi |
| author_facet | Rong Zhang Chuan Li Huilin Cui Yanbo Wang Shaoce Zhang Pei Li Yue Hou Ying Guo Guojin Liang Zhaodong Huang Chao Peng Chunyi Zhi |
| author_sort | Rong Zhang |
| collection | DOAJ |
| description | Abstract Most current research is devoted to electrochemical nitrate reduction reaction for ammonia synthesis under alkaline/neutral media while the investigation of nitrate reduction under acidic conditions is rarely reported. In this work, we demonstrate the potential of TiO2 nanosheet with intrinsically poor hydrogen-evolution activity for selective and rapid nitrate reduction to ammonia under acidic conditions. Hybridized with iron phthalocyanine, the resulting catalyst displays remarkably improved efficiency toward ammonia formation owing to the enhanced nitrate adsorption, suppressed hydrogen evolution and lowered energy barrier for the rate-determining step. Then, an alkaline-acid hybrid Zn-nitrate battery was developed with high open-circuit voltage of 1.99 V and power density of 91.4 mW cm–2. Further, the environmental sulfur recovery can be powered by above hybrid battery and the hydrazine-nitrate fuel cell can be developed for simultaneously hydrazine/nitrate conversion and electricity generation. This work demonstrates the attractive potential of acidic nitrate reduction for ammonia electrosynthesis and broadens the field of energy conversion. |
| first_indexed | 2024-03-09T01:17:07Z |
| format | Article |
| id | doaj.art-ecfe787103004f938ac0a23698f5d1bb |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-03-09T01:17:07Z |
| publishDate | 2023-12-01 |
| publisher | Nature Portfolio |
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| series | Nature Communications |
| spelling | doaj.art-ecfe787103004f938ac0a23698f5d1bb2023-12-10T12:24:23ZengNature PortfolioNature Communications2041-17232023-12-0114111110.1038/s41467-023-43897-6Electrochemical nitrate reduction in acid enables high-efficiency ammonia synthesis and high-voltage pollutes-based fuel cellsRong Zhang0Chuan Li1Huilin Cui2Yanbo Wang3Shaoce Zhang4Pei Li5Yue Hou6Ying Guo7Guojin Liang8Zhaodong Huang9Chao Peng10Chunyi Zhi11Department of Materials Science and Engineering, City University of Hong KongDepartment of Materials Science and Engineering, City University of Hong KongDepartment of Materials Science and Engineering, City University of Hong KongDepartment of Materials Science and Engineering, City University of Hong KongDepartment of Materials Science and Engineering, City University of Hong KongDepartment of Materials Science and Engineering, City University of Hong KongDepartment of Materials Science and Engineering, City University of Hong KongCollege of Materials Science and Engineering, Shenzhen UniversityDepartment of Materials Science and Engineering, City University of Hong KongDepartment of Materials Science and Engineering, City University of Hong KongMultiscale Crystal Materials Research Center, Shenzhen Institute of Advanced Technology, Chinese Academy of SciencesDepartment of Materials Science and Engineering, City University of Hong KongAbstract Most current research is devoted to electrochemical nitrate reduction reaction for ammonia synthesis under alkaline/neutral media while the investigation of nitrate reduction under acidic conditions is rarely reported. In this work, we demonstrate the potential of TiO2 nanosheet with intrinsically poor hydrogen-evolution activity for selective and rapid nitrate reduction to ammonia under acidic conditions. Hybridized with iron phthalocyanine, the resulting catalyst displays remarkably improved efficiency toward ammonia formation owing to the enhanced nitrate adsorption, suppressed hydrogen evolution and lowered energy barrier for the rate-determining step. Then, an alkaline-acid hybrid Zn-nitrate battery was developed with high open-circuit voltage of 1.99 V and power density of 91.4 mW cm–2. Further, the environmental sulfur recovery can be powered by above hybrid battery and the hydrazine-nitrate fuel cell can be developed for simultaneously hydrazine/nitrate conversion and electricity generation. This work demonstrates the attractive potential of acidic nitrate reduction for ammonia electrosynthesis and broadens the field of energy conversion.https://doi.org/10.1038/s41467-023-43897-6 |
| spellingShingle | Rong Zhang Chuan Li Huilin Cui Yanbo Wang Shaoce Zhang Pei Li Yue Hou Ying Guo Guojin Liang Zhaodong Huang Chao Peng Chunyi Zhi Electrochemical nitrate reduction in acid enables high-efficiency ammonia synthesis and high-voltage pollutes-based fuel cells Nature Communications |
| title | Electrochemical nitrate reduction in acid enables high-efficiency ammonia synthesis and high-voltage pollutes-based fuel cells |
| title_full | Electrochemical nitrate reduction in acid enables high-efficiency ammonia synthesis and high-voltage pollutes-based fuel cells |
| title_fullStr | Electrochemical nitrate reduction in acid enables high-efficiency ammonia synthesis and high-voltage pollutes-based fuel cells |
| title_full_unstemmed | Electrochemical nitrate reduction in acid enables high-efficiency ammonia synthesis and high-voltage pollutes-based fuel cells |
| title_short | Electrochemical nitrate reduction in acid enables high-efficiency ammonia synthesis and high-voltage pollutes-based fuel cells |
| title_sort | electrochemical nitrate reduction in acid enables high efficiency ammonia synthesis and high voltage pollutes based fuel cells |
| url | https://doi.org/10.1038/s41467-023-43897-6 |
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