{"title":"用于电磁波吸收的超轻、分层金属-有机框架衍生物/石墨烯混合气凝胶","authors":"Jingpeng Lin, Jing Qiao, Haoyuan Tian, Lutong Li, Wei Liu, Lili Wu, Jiurong Liu, Zhihui Zeng","doi":"10.1007/s42114-023-00762-w","DOIUrl":null,"url":null,"abstract":"<div><p>On the basis of high-efficiency electrostatic assembly, a type of ultralight, hydrophobic, hierarchically porous aerogels composed of metal–organic framework (MOF)-derived magnetic γ-Fe<sub>2</sub>O<sub>3</sub>@C/graphene are prepared via facile, scalable freeze-drying followed by annealing approach. The interaction between MOF and graphene oxide leads to the uniform dispersion of MOF-derived magnetic nanoparticles in the graphene-based cell walls, endowing the aerogels with high conductive and magnetic losses as well as polarization loss capacity derived from abundant heterogeneous interfaces. Both the core–shell microstructure of MOF derivative and the hierarchical pores of aerogels are instrumental in the multiple scattering of electromagnetic waves (EMWs), further promoting the EMW loss capability. Combined with the optimized impedance matching arising from the synergy between dielectric and magnetic components, an excellent EMW absorption performance of aerogel is achieved. At a filling ratio of merely 5 wt%, a minimum reflection loss of − 60.5 dB and a broad effective absorption bandwidth of 7.76 GHz covering the entire Ku-band are accomplished, significantly outperforming previously reported MOF- or graphene aerogel-based EMW absorbers. This work thus offers an efficient design strategy to prepare ultralight MOF-based aerogels for high-efficiency EMW absorbing materials in applications of electromagnetic compatibility and aerospace.</p><h3>Graphical Abstract</h3>\n <div><figure><div><div><picture><source><img></source></picture></div></div></figure></div>\n </div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"6 5","pages":""},"PeriodicalIF":23.2000,"publicationDate":"2023-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"Ultralight, hierarchical metal–organic framework derivative/graphene hybrid aerogel for electromagnetic wave absorption\",\"authors\":\"Jingpeng Lin, Jing Qiao, Haoyuan Tian, Lutong Li, Wei Liu, Lili Wu, Jiurong Liu, Zhihui Zeng\",\"doi\":\"10.1007/s42114-023-00762-w\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>On the basis of high-efficiency electrostatic assembly, a type of ultralight, hydrophobic, hierarchically porous aerogels composed of metal–organic framework (MOF)-derived magnetic γ-Fe<sub>2</sub>O<sub>3</sub>@C/graphene are prepared via facile, scalable freeze-drying followed by annealing approach. The interaction between MOF and graphene oxide leads to the uniform dispersion of MOF-derived magnetic nanoparticles in the graphene-based cell walls, endowing the aerogels with high conductive and magnetic losses as well as polarization loss capacity derived from abundant heterogeneous interfaces. Both the core–shell microstructure of MOF derivative and the hierarchical pores of aerogels are instrumental in the multiple scattering of electromagnetic waves (EMWs), further promoting the EMW loss capability. Combined with the optimized impedance matching arising from the synergy between dielectric and magnetic components, an excellent EMW absorption performance of aerogel is achieved. At a filling ratio of merely 5 wt%, a minimum reflection loss of − 60.5 dB and a broad effective absorption bandwidth of 7.76 GHz covering the entire Ku-band are accomplished, significantly outperforming previously reported MOF- or graphene aerogel-based EMW absorbers. This work thus offers an efficient design strategy to prepare ultralight MOF-based aerogels for high-efficiency EMW absorbing materials in applications of electromagnetic compatibility and aerospace.</p><h3>Graphical Abstract</h3>\\n <div><figure><div><div><picture><source><img></source></picture></div></div></figure></div>\\n </div>\",\"PeriodicalId\":7220,\"journal\":{\"name\":\"Advanced Composites and Hybrid Materials\",\"volume\":\"6 5\",\"pages\":\"\"},\"PeriodicalIF\":23.2000,\"publicationDate\":\"2023-09-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advanced Composites and Hybrid Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s42114-023-00762-w\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, COMPOSITES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Composites and Hybrid Materials","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s42114-023-00762-w","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, COMPOSITES","Score":null,"Total":0}
On the basis of high-efficiency electrostatic assembly, a type of ultralight, hydrophobic, hierarchically porous aerogels composed of metal–organic framework (MOF)-derived magnetic γ-Fe2O3@C/graphene are prepared via facile, scalable freeze-drying followed by annealing approach. The interaction between MOF and graphene oxide leads to the uniform dispersion of MOF-derived magnetic nanoparticles in the graphene-based cell walls, endowing the aerogels with high conductive and magnetic losses as well as polarization loss capacity derived from abundant heterogeneous interfaces. Both the core–shell microstructure of MOF derivative and the hierarchical pores of aerogels are instrumental in the multiple scattering of electromagnetic waves (EMWs), further promoting the EMW loss capability. Combined with the optimized impedance matching arising from the synergy between dielectric and magnetic components, an excellent EMW absorption performance of aerogel is achieved. At a filling ratio of merely 5 wt%, a minimum reflection loss of − 60.5 dB and a broad effective absorption bandwidth of 7.76 GHz covering the entire Ku-band are accomplished, significantly outperforming previously reported MOF- or graphene aerogel-based EMW absorbers. This work thus offers an efficient design strategy to prepare ultralight MOF-based aerogels for high-efficiency EMW absorbing materials in applications of electromagnetic compatibility and aerospace.
期刊介绍：
Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field.
The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest.
Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials.
Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.
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