Cu‐Co Dual Sites Tandem Synergistic Effect Boosting Neutral Low Concentration Nitrate Electroreduction to Ammonia
Abstract Electrochemical nitrate reduction reaction (NO3−RR) has emerged as an alternative strategy for wastewater treatment and ammonia production in neutral low‐concentration nitrate. However, the electrocatalyst faces the challenge of limited NO3− distribution and deficient active hydrogen (Hads)...
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| Format: | Article |
| Language: | English |
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Wiley
2025-04-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202416386 |
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| author | Wenhao Yang Ziwei Chang Xu Yu Ping Wu Ruxiang Shen Lianzhou Wang Xiangzhi Cui Jianlin Shi |
| author_facet | Wenhao Yang Ziwei Chang Xu Yu Ping Wu Ruxiang Shen Lianzhou Wang Xiangzhi Cui Jianlin Shi |
| author_sort | Wenhao Yang |
| collection | DOAJ |
| description | Abstract Electrochemical nitrate reduction reaction (NO3−RR) has emerged as an alternative strategy for wastewater treatment and ammonia production in neutral low‐concentration nitrate. However, the electrocatalyst faces the challenge of limited NO3− distribution and deficient active hydrogen (Hads) on the catalyst surface resulting from the low concentration of NO3− and the difficulty of water splitting under neutral conditions. Here, a Cu‐Co dual sites tandem synergistic catalysis mechanism has been proposed by doping Cu into CoP to facilitate the adsorption and conversion of NO3− on Cu and to accelerate the water splitting on CoP leading to the significantly high NO3−RR performance. The designed Cu‐CoP catalyst exhibits an ammonia yield of 7.65 mg h−1 cm−2 and a Faraday efficiency of 85.1% at −1.0 V under neutral low‐concentration nitrate (10 m M), which is the highest ammonia yield in the reported data. In situ characterization and theoretical calculations confirm the tandem synergistic effect, in which the Cu site favors the adsorption and activation of NO3− to form NO2−, and concurrently modulates the electronic structure of the Co site with optimized Hads adsorption resulting in the significantly enhanced NO3−RR at neutral low concentration nitrate. |
| format | Article |
| id | doaj-art-56b0d50978894779bf0d54a0485ee55b |
| institution | DOAJ |
| issn | 2198-3844 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Wiley |
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| series | Advanced Science |
| spelling | doaj-art-56b0d50978894779bf0d54a0485ee55b2025-08-20T03:09:08ZengWileyAdvanced Science2198-38442025-04-011214n/an/a10.1002/advs.202416386Cu‐Co Dual Sites Tandem Synergistic Effect Boosting Neutral Low Concentration Nitrate Electroreduction to AmmoniaWenhao Yang0Ziwei Chang1Xu Yu2Ping Wu3Ruxiang Shen4Lianzhou Wang5Xiangzhi Cui6Jianlin Shi7State Key Laboratory of High‐Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 P. R. ChinaSchool of Physical Science and Technology Shanghai Tech University Shanghai 201210 P. R. ChinaState Key Laboratory of High‐Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 P. R. ChinaState Key Laboratory of High‐Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 P. R. ChinaState Key Laboratory of High‐Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 P. R. ChinaNanomaterials Centre School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland St Lucia Brisbane QLD 4072 AustraliaState Key Laboratory of High‐Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 P. R. ChinaState Key Laboratory of High‐Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 P. R. ChinaAbstract Electrochemical nitrate reduction reaction (NO3−RR) has emerged as an alternative strategy for wastewater treatment and ammonia production in neutral low‐concentration nitrate. However, the electrocatalyst faces the challenge of limited NO3− distribution and deficient active hydrogen (Hads) on the catalyst surface resulting from the low concentration of NO3− and the difficulty of water splitting under neutral conditions. Here, a Cu‐Co dual sites tandem synergistic catalysis mechanism has been proposed by doping Cu into CoP to facilitate the adsorption and conversion of NO3− on Cu and to accelerate the water splitting on CoP leading to the significantly high NO3−RR performance. The designed Cu‐CoP catalyst exhibits an ammonia yield of 7.65 mg h−1 cm−2 and a Faraday efficiency of 85.1% at −1.0 V under neutral low‐concentration nitrate (10 m M), which is the highest ammonia yield in the reported data. In situ characterization and theoretical calculations confirm the tandem synergistic effect, in which the Cu site favors the adsorption and activation of NO3− to form NO2−, and concurrently modulates the electronic structure of the Co site with optimized Hads adsorption resulting in the significantly enhanced NO3−RR at neutral low concentration nitrate.https://doi.org/10.1002/advs.202416386active hydrogendual siteselectrochemical nitrate reductionneutral low concentration nitratetandem catalysis |
| spellingShingle | Wenhao Yang Ziwei Chang Xu Yu Ping Wu Ruxiang Shen Lianzhou Wang Xiangzhi Cui Jianlin Shi Cu‐Co Dual Sites Tandem Synergistic Effect Boosting Neutral Low Concentration Nitrate Electroreduction to Ammonia Advanced Science active hydrogen dual sites electrochemical nitrate reduction neutral low concentration nitrate tandem catalysis |
| title | Cu‐Co Dual Sites Tandem Synergistic Effect Boosting Neutral Low Concentration Nitrate Electroreduction to Ammonia |
| title_full | Cu‐Co Dual Sites Tandem Synergistic Effect Boosting Neutral Low Concentration Nitrate Electroreduction to Ammonia |
| title_fullStr | Cu‐Co Dual Sites Tandem Synergistic Effect Boosting Neutral Low Concentration Nitrate Electroreduction to Ammonia |
| title_full_unstemmed | Cu‐Co Dual Sites Tandem Synergistic Effect Boosting Neutral Low Concentration Nitrate Electroreduction to Ammonia |
| title_short | Cu‐Co Dual Sites Tandem Synergistic Effect Boosting Neutral Low Concentration Nitrate Electroreduction to Ammonia |
| title_sort | cu co dual sites tandem synergistic effect boosting neutral low concentration nitrate electroreduction to ammonia |
| topic | active hydrogen dual sites electrochemical nitrate reduction neutral low concentration nitrate tandem catalysis |
| url | https://doi.org/10.1002/advs.202416386 |
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