{"title":"在异质结构铜铋催化剂上通过 CO2 和硝酸盐共电解合成尿素","authors":"Xinning Song, Xiaodong Ma, Tianhui Chen, Liang Xu, Jiaqi Feng, Limin Wu, Shunhan Jia, Libing Zhang, Xingxing Tan, Ruhan Wang, Chunjun Chen, Jun Ma, Qinggong Zhu, Xinchen Kang, Xiaofu Sun, Buxing Han","doi":"10.1021/jacs.4c08564","DOIUrl":null,"url":null,"abstract":"Electrocatalytic coupling of CO<sub>2</sub> and NO<sub>3</sub><sup>–</sup> to urea is a promising way to mitigate greenhouse gas emissions, reduce waste from industrial processes, and store renewable energy. However, the poor selectivity and activity limit its application due to the multistep process involving diverse reactants and reactions. Herein, we report the first work to design heterostructured Cu–Bi bimetallic catalysts for urea electrosynthesis. A high urea Faradaic efficiency (FE) of 23.5% with a production rate of 2180.3 μg h<sup>–1</sup> mg<sub>cat</sub><sup>–1</sup> was achieved in H-cells, which surpassed most reported electrocatalysts in the literature. Moreover, the catalyst had a remarkable recycling stability. Experiments and density functional theory calculations demonstrated that introduction of moderate Bi induced the formation of the Bi–Cu/O–Bi/Cu<sub>2</sub>O heterostructure with abundant phase boundaries, which are beneficial for NO<sub>3</sub><sup>–</sup>, CO<sub>2</sub>, and H<sub>2</sub>O activation and enhance C–N coupling and promote *HONCON intermediate formation. Moreover, favorable *HNCONH<sub>2</sub> protonation and urea desorption processes were also validated, further explaining the reason for high activity and selectivity toward urea.","PeriodicalId":49,"journal":{"name":"Journal of the American Chemical Society","volume":null,"pages":null},"PeriodicalIF":14.4000,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Urea Synthesis via Coelectrolysis of CO2 and Nitrate over Heterostructured Cu–Bi Catalysts\",\"authors\":\"Xinning Song, Xiaodong Ma, Tianhui Chen, Liang Xu, Jiaqi Feng, Limin Wu, Shunhan Jia, Libing Zhang, Xingxing Tan, Ruhan Wang, Chunjun Chen, Jun Ma, Qinggong Zhu, Xinchen Kang, Xiaofu Sun, Buxing Han\",\"doi\":\"10.1021/jacs.4c08564\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Electrocatalytic coupling of CO<sub>2</sub> and NO<sub>3</sub><sup>–</sup> to urea is a promising way to mitigate greenhouse gas emissions, reduce waste from industrial processes, and store renewable energy. However, the poor selectivity and activity limit its application due to the multistep process involving diverse reactants and reactions. Herein, we report the first work to design heterostructured Cu–Bi bimetallic catalysts for urea electrosynthesis. A high urea Faradaic efficiency (FE) of 23.5% with a production rate of 2180.3 μg h<sup>–1</sup> mg<sub>cat</sub><sup>–1</sup> was achieved in H-cells, which surpassed most reported electrocatalysts in the literature. Moreover, the catalyst had a remarkable recycling stability. Experiments and density functional theory calculations demonstrated that introduction of moderate Bi induced the formation of the Bi–Cu/O–Bi/Cu<sub>2</sub>O heterostructure with abundant phase boundaries, which are beneficial for NO<sub>3</sub><sup>–</sup>, CO<sub>2</sub>, and H<sub>2</sub>O activation and enhance C–N coupling and promote *HONCON intermediate formation. Moreover, favorable *HNCONH<sub>2</sub> protonation and urea desorption processes were also validated, further explaining the reason for high activity and selectivity toward urea.\",\"PeriodicalId\":49,\"journal\":{\"name\":\"Journal of the American Chemical Society\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":14.4000,\"publicationDate\":\"2024-09-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of the American Chemical Society\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://doi.org/10.1021/jacs.4c08564\",\"RegionNum\":1,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the American Chemical Society","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1021/jacs.4c08564","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Urea Synthesis via Coelectrolysis of CO2 and Nitrate over Heterostructured Cu–Bi Catalysts
Electrocatalytic coupling of CO2 and NO3– to urea is a promising way to mitigate greenhouse gas emissions, reduce waste from industrial processes, and store renewable energy. However, the poor selectivity and activity limit its application due to the multistep process involving diverse reactants and reactions. Herein, we report the first work to design heterostructured Cu–Bi bimetallic catalysts for urea electrosynthesis. A high urea Faradaic efficiency (FE) of 23.5% with a production rate of 2180.3 μg h–1 mgcat–1 was achieved in H-cells, which surpassed most reported electrocatalysts in the literature. Moreover, the catalyst had a remarkable recycling stability. Experiments and density functional theory calculations demonstrated that introduction of moderate Bi induced the formation of the Bi–Cu/O–Bi/Cu2O heterostructure with abundant phase boundaries, which are beneficial for NO3–, CO2, and H2O activation and enhance C–N coupling and promote *HONCON intermediate formation. Moreover, favorable *HNCONH2 protonation and urea desorption processes were also validated, further explaining the reason for high activity and selectivity toward urea.
期刊介绍:
The flagship journal of the American Chemical Society, known as the Journal of the American Chemical Society (JACS), has been a prestigious publication since its establishment in 1879. It holds a preeminent position in the field of chemistry and related interdisciplinary sciences. JACS is committed to disseminating cutting-edge research papers, covering a wide range of topics, and encompasses approximately 19,000 pages of Articles, Communications, and Perspectives annually. With a weekly publication frequency, JACS plays a vital role in advancing the field of chemistry by providing essential research.