{"title":"高度分散的银纳米晶体锚定在n掺杂的多孔碳气凝胶上作为混合电容去离子中Cl -捕获的高质量负载电极","authors":"Weiqing Kong, Xiaoyuan Lu, Yaobin Wang, Kaixin Tan, Chenmiao Liu, Jianpeng Sun, Meng Zhang, Yuanyuan Feng","doi":"10.1002/smll.202409342","DOIUrl":null,"url":null,"abstract":"<p>Nanostructured Faradaic materials show extraordinary promise for capacitive deionization (CDI) toward the relief of global freshwater scarcity. But at present, there exist at least two shortages for the development of CDI electrode materials. In laboratory studies, evaluating their desalination performance is usually based on low mass loadings (<1 mg cm<sup>−2</sup>), which is far behind the practical demand for fabricating high-mass-loading CDI electrodes or devices. On the other hand, high efficient, high active anode materials are rather scarce. Herein, highly dispersed Ag nanocrystals are synthesized on N-doped holey carbon (Ag@NHC) for use as a high-performance Cl<sup>−</sup>-capture electrode at practical levels of mass loading. The Ag@NHC material is characteristic of ultrafine Ag nanocrystals with size of ≈7 nm anchored on carbon through Ag─N bonds, abundant 1–20 nm in-plane pores in carbon sheets, and an ultrahigh specific surface area (1827.9 m<sup>2</sup> g<sup>−1</sup>). This ensures Ag@NHC electrode (at 6.4 mg cm<sup>−2</sup> mass loading) with excellent structural and property stabilities, >80% atom-economic utilization of Ag, as well as superior Cl<sup>−</sup>-capture performances. This work provides a general guideline on how to estimate the optimal mass loadings for constructing highly active CDI electrodes in the future.</p>","PeriodicalId":228,"journal":{"name":"Small","volume":"21 5","pages":""},"PeriodicalIF":12.1000,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Highly Dispersed Ag Nanocrystals Anchored on N-Doped Holey Carbon Aerogel as High-Mass-Loading Electrode for Cl− Capture in Hybrid Capacitive Deionization\",\"authors\":\"Weiqing Kong, Xiaoyuan Lu, Yaobin Wang, Kaixin Tan, Chenmiao Liu, Jianpeng Sun, Meng Zhang, Yuanyuan Feng\",\"doi\":\"10.1002/smll.202409342\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Nanostructured Faradaic materials show extraordinary promise for capacitive deionization (CDI) toward the relief of global freshwater scarcity. But at present, there exist at least two shortages for the development of CDI electrode materials. In laboratory studies, evaluating their desalination performance is usually based on low mass loadings (<1 mg cm<sup>−2</sup>), which is far behind the practical demand for fabricating high-mass-loading CDI electrodes or devices. On the other hand, high efficient, high active anode materials are rather scarce. Herein, highly dispersed Ag nanocrystals are synthesized on N-doped holey carbon (Ag@NHC) for use as a high-performance Cl<sup>−</sup>-capture electrode at practical levels of mass loading. The Ag@NHC material is characteristic of ultrafine Ag nanocrystals with size of ≈7 nm anchored on carbon through Ag─N bonds, abundant 1–20 nm in-plane pores in carbon sheets, and an ultrahigh specific surface area (1827.9 m<sup>2</sup> g<sup>−1</sup>). This ensures Ag@NHC electrode (at 6.4 mg cm<sup>−2</sup> mass loading) with excellent structural and property stabilities, >80% atom-economic utilization of Ag, as well as superior Cl<sup>−</sup>-capture performances. This work provides a general guideline on how to estimate the optimal mass loadings for constructing highly active CDI electrodes in the future.</p>\",\"PeriodicalId\":228,\"journal\":{\"name\":\"Small\",\"volume\":\"21 5\",\"pages\":\"\"},\"PeriodicalIF\":12.1000,\"publicationDate\":\"2024-12-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Small\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/smll.202409342\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Small","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/smll.202409342","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Highly Dispersed Ag Nanocrystals Anchored on N-Doped Holey Carbon Aerogel as High-Mass-Loading Electrode for Cl− Capture in Hybrid Capacitive Deionization
Nanostructured Faradaic materials show extraordinary promise for capacitive deionization (CDI) toward the relief of global freshwater scarcity. But at present, there exist at least two shortages for the development of CDI electrode materials. In laboratory studies, evaluating their desalination performance is usually based on low mass loadings (<1 mg cm−2), which is far behind the practical demand for fabricating high-mass-loading CDI electrodes or devices. On the other hand, high efficient, high active anode materials are rather scarce. Herein, highly dispersed Ag nanocrystals are synthesized on N-doped holey carbon (Ag@NHC) for use as a high-performance Cl−-capture electrode at practical levels of mass loading. The Ag@NHC material is characteristic of ultrafine Ag nanocrystals with size of ≈7 nm anchored on carbon through Ag─N bonds, abundant 1–20 nm in-plane pores in carbon sheets, and an ultrahigh specific surface area (1827.9 m2 g−1). This ensures Ag@NHC electrode (at 6.4 mg cm−2 mass loading) with excellent structural and property stabilities, >80% atom-economic utilization of Ag, as well as superior Cl−-capture performances. This work provides a general guideline on how to estimate the optimal mass loadings for constructing highly active CDI electrodes in the future.
期刊介绍:
Small serves as an exceptional platform for both experimental and theoretical studies in fundamental and applied interdisciplinary research at the nano- and microscale. The journal offers a compelling mix of peer-reviewed Research Articles, Reviews, Perspectives, and Comments.
With a remarkable 2022 Journal Impact Factor of 13.3 (Journal Citation Reports from Clarivate Analytics, 2023), Small remains among the top multidisciplinary journals, covering a wide range of topics at the interface of materials science, chemistry, physics, engineering, medicine, and biology.
Small's readership includes biochemists, biologists, biomedical scientists, chemists, engineers, information technologists, materials scientists, physicists, and theoreticians alike.