Ultra-fast Joule heating synthesis of homogeneous copper-based bimetallic catalysts for electrochemical nitrate-to-ammonium reduction in wastewater treatment
The conversion of nitrate to ammonia presents a promising solution to reduce the energy consumption and carbon footprint associated with the traditional Haber-Bosch process, while also addressing the environmental impacts of nitrate-containing wastewater. To tackle the challenges in catalyst prepara...
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| Format: | Article |
| Language: | English |
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Elsevier
2025
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| Online Access: | http://umpir.ump.edu.my/id/eprint/45060/ http://umpir.ump.edu.my/id/eprint/45060/1/Ultra-fast%20Joule%20heating%20synthesis%20of%20homogeneous.pdf |
| _version_ | 1848827246508244992 |
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| author | Su, Jenn Fang Hoang, Minh-Son Setiabudi, Herma Dina |
| author_facet | Su, Jenn Fang Hoang, Minh-Son Setiabudi, Herma Dina |
| author_sort | Su, Jenn Fang |
| building | UMP Institutional Repository |
| collection | Online Access |
| description | The conversion of nitrate to ammonia presents a promising solution to reduce the energy consumption and carbon footprint associated with the traditional Haber-Bosch process, while also addressing the environmental impacts of nitrate-containing wastewater. To tackle the challenges in catalyst preparation for efficient electrochemical nitrate reduction toward ammonium, this study reports an extremely rapid Joule-heating synthetic method to fabricate a series of copper (Cu)-based bimetallic catalysts. The results demonstrate that the Joule-heating process leads to the formation of well-dispersed and homogeneous bimetallic particles as evidenced by the scanning electron microscope (SEM) and corresponding energy dispersive spectroscopy (EDS), exhibiting an enhanced catalytic activity. Among various samples, the homogeneous copper-nickel (CuNi) catalyst presents an exceptional ammonium selectivity of 98 %, an ammonium yield of 49 %, and an ammonium formation rate of 764 µg h−1 cm−2, which are approximately 2 times higher than Cu monometallic catalyst. This superior activity is attributed to the increased electrochemical active surface area (ECSA) in CuNi materials. Additionally, X-ray photoelectron spectroscopy (XPS) characterization confirms the electronic redistribution within the CuNi structure, revealing a lower oxidation state of Cu, which further contributes to the improved efficiency in the nitrate reduction reaction. Overall, this study enables a new route for the rational design of homogenous bimetallic catalysts in nitrate reduction for wastewater treatment and environmental protection. |
| first_indexed | 2025-11-15T03:57:40Z |
| format | Article |
| id | ump-45060 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T03:57:40Z |
| publishDate | 2025 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | ump-450602025-07-14T03:38:04Z http://umpir.ump.edu.my/id/eprint/45060/ Ultra-fast Joule heating synthesis of homogeneous copper-based bimetallic catalysts for electrochemical nitrate-to-ammonium reduction in wastewater treatment Su, Jenn Fang Hoang, Minh-Son Setiabudi, Herma Dina QD Chemistry TD Environmental technology. Sanitary engineering TP Chemical technology The conversion of nitrate to ammonia presents a promising solution to reduce the energy consumption and carbon footprint associated with the traditional Haber-Bosch process, while also addressing the environmental impacts of nitrate-containing wastewater. To tackle the challenges in catalyst preparation for efficient electrochemical nitrate reduction toward ammonium, this study reports an extremely rapid Joule-heating synthetic method to fabricate a series of copper (Cu)-based bimetallic catalysts. The results demonstrate that the Joule-heating process leads to the formation of well-dispersed and homogeneous bimetallic particles as evidenced by the scanning electron microscope (SEM) and corresponding energy dispersive spectroscopy (EDS), exhibiting an enhanced catalytic activity. Among various samples, the homogeneous copper-nickel (CuNi) catalyst presents an exceptional ammonium selectivity of 98 %, an ammonium yield of 49 %, and an ammonium formation rate of 764 µg h−1 cm−2, which are approximately 2 times higher than Cu monometallic catalyst. This superior activity is attributed to the increased electrochemical active surface area (ECSA) in CuNi materials. Additionally, X-ray photoelectron spectroscopy (XPS) characterization confirms the electronic redistribution within the CuNi structure, revealing a lower oxidation state of Cu, which further contributes to the improved efficiency in the nitrate reduction reaction. Overall, this study enables a new route for the rational design of homogenous bimetallic catalysts in nitrate reduction for wastewater treatment and environmental protection. Elsevier 2025 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/45060/1/Ultra-fast%20Joule%20heating%20synthesis%20of%20homogeneous.pdf Su, Jenn Fang and Hoang, Minh-Son and Setiabudi, Herma Dina (2025) Ultra-fast Joule heating synthesis of homogeneous copper-based bimetallic catalysts for electrochemical nitrate-to-ammonium reduction in wastewater treatment. Separation and Purification Technology, 371 (133312). pp. 1-9. ISSN 1383-5866. (Published) https://doi.org/10.1016/j.seppur.2025.133312 https://doi.org/10.1016/j.seppur.2025.133312 |
| spellingShingle | QD Chemistry TD Environmental technology. Sanitary engineering TP Chemical technology Su, Jenn Fang Hoang, Minh-Son Setiabudi, Herma Dina Ultra-fast Joule heating synthesis of homogeneous copper-based bimetallic catalysts for electrochemical nitrate-to-ammonium reduction in wastewater treatment |
| title | Ultra-fast Joule heating synthesis of homogeneous copper-based bimetallic catalysts for electrochemical nitrate-to-ammonium reduction in wastewater treatment |
| title_full | Ultra-fast Joule heating synthesis of homogeneous copper-based bimetallic catalysts for electrochemical nitrate-to-ammonium reduction in wastewater treatment |
| title_fullStr | Ultra-fast Joule heating synthesis of homogeneous copper-based bimetallic catalysts for electrochemical nitrate-to-ammonium reduction in wastewater treatment |
| title_full_unstemmed | Ultra-fast Joule heating synthesis of homogeneous copper-based bimetallic catalysts for electrochemical nitrate-to-ammonium reduction in wastewater treatment |
| title_short | Ultra-fast Joule heating synthesis of homogeneous copper-based bimetallic catalysts for electrochemical nitrate-to-ammonium reduction in wastewater treatment |
| title_sort | ultra-fast joule heating synthesis of homogeneous copper-based bimetallic catalysts for electrochemical nitrate-to-ammonium reduction in wastewater treatment |
| topic | QD Chemistry TD Environmental technology. Sanitary engineering TP Chemical technology |
| url | http://umpir.ump.edu.my/id/eprint/45060/ http://umpir.ump.edu.my/id/eprint/45060/ http://umpir.ump.edu.my/id/eprint/45060/ http://umpir.ump.edu.my/id/eprint/45060/1/Ultra-fast%20Joule%20heating%20synthesis%20of%20homogeneous.pdf |