Liu, Xingmin ; Chai, Nan ; Yu, Zhaoju ; Xu, Hailong ; Li, Xinliang ; Liu, Jiquan ; Yin, Xiaowei ; Riedel, Ralf
Hrsg.: Zhang, Litong (2019)
Ultra-light, high flexible and efficient CNTs/Ti3C2-sodium alginate foam for electromagnetic absorption application.
2nd Sino-German Symposium. Xi'an, China (14.04.2018-20.04.2018)
doi: 10.1016/j.jmst.2019.07.019
Konferenzveröffentlichung, Bibliographie
Kurzbeschreibung (Abstract)
Ultra-light carboxylic functionalized multi-walled carbon nanotubes (CNTs-COOH) and Ti3C2 MXene hybrids modified sodium alginate (CNTs/Ti3C2-SA) based composite foams were prepared through ice-templated freeze-drying method. The microstructure of the synthesized CNTs/Ti3C2 hybrids and CNTs/Ti3C2-SA foams is characterized by the presence of CNTs inserted between MXene layers which prevents their restacking. The resultant CNTs/Ti3C2 hybrids exhibit a unique sandwich-like hierarchical structure. Scanning electron microscopy (SEM) images show that the CNTs/Ti3C2-SA foam exhibits a heterogeneous anisotropic microstructure and CNTs/Ti3C2 hybrids are homogeneously dispersed in the skeleton of the porous foam. In case that the content of the hybrids amounts 40 mg/cm(3), the CNTs/Ti3C2-SA foam possesses excellent electromagnetic (EM) absorption performance with a minimum reflection coefficient (RCmin) as low as -40.0 dB. In case of a sample thickness of 3.95 mm, the RCmin reaches -24.4 dB and the effective absorption bandwidth covers the whole X band from 8.2 to 12.4 GHz. A control test shows that, with the same absorbent content, the CNTs/Ti3C2-SA foam exhibits a far better EM performance than that of CNT-free Ti3C2-SA foam.
| Typ des Eintrags: | Konferenzveröffentlichung |
|---|---|
| Erschienen: | 2019 |
| Herausgeber: | Zhang, Litong |
| Autor(en): | Liu, Xingmin ; Chai, Nan ; Yu, Zhaoju ; Xu, Hailong ; Li, Xinliang ; Liu, Jiquan ; Yin, Xiaowei ; Riedel, Ralf |
| Art des Eintrags: | Bibliographie |
| Titel: | Ultra-light, high flexible and efficient CNTs/Ti3C2-sodium alginate foam for electromagnetic absorption application |
| Sprache: | Englisch |
| Publikationsjahr: | Dezember 2019 |
| Ort: | Shenyang |
| Verlag: | Journal of Materials Science and Technology |
| Buchtitel: | Ultra High Temperature Ceramic Matrix Composites Design and Application |
| Reihe: | Journal of Materials Science and Technology: Special Issue |
| Band einer Reihe: | 35(12) |
| Veranstaltungstitel: | 2nd Sino-German Symposium |
| Veranstaltungsort: | Xi'an, China |
| Veranstaltungsdatum: | 14.04.2018-20.04.2018 |
| DOI: | 10.1016/j.jmst.2019.07.019 |
| URL / URN: | https://www.sciencedirect.com/science/article/pii/S100503021... |
| Kurzbeschreibung (Abstract): | Ultra-light carboxylic functionalized multi-walled carbon nanotubes (CNTs-COOH) and Ti3C2 MXene hybrids modified sodium alginate (CNTs/Ti3C2-SA) based composite foams were prepared through ice-templated freeze-drying method. The microstructure of the synthesized CNTs/Ti3C2 hybrids and CNTs/Ti3C2-SA foams is characterized by the presence of CNTs inserted between MXene layers which prevents their restacking. The resultant CNTs/Ti3C2 hybrids exhibit a unique sandwich-like hierarchical structure. Scanning electron microscopy (SEM) images show that the CNTs/Ti3C2-SA foam exhibits a heterogeneous anisotropic microstructure and CNTs/Ti3C2 hybrids are homogeneously dispersed in the skeleton of the porous foam. In case that the content of the hybrids amounts 40 mg/cm(3), the CNTs/Ti3C2-SA foam possesses excellent electromagnetic (EM) absorption performance with a minimum reflection coefficient (RCmin) as low as -40.0 dB. In case of a sample thickness of 3.95 mm, the RCmin reaches -24.4 dB and the effective absorption bandwidth covers the whole X band from 8.2 to 12.4 GHz. A control test shows that, with the same absorbent content, the CNTs/Ti3C2-SA foam exhibits a far better EM performance than that of CNT-free Ti3C2-SA foam. |
| Freie Schlagworte: | Carbon nanotubes; MXene; Sodium alginate; Electromagnetic absorption properties REDUCED GRAPHENE OXIDES; WALL CARBON NANOTUBES; MICROWAVE-ABSORPTION; TI3C2 MXENES; LIGHTWEIGHT; ZNO; PERMITTIVITY; ENHANCEMENT; COMPOSITES |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe |
| Hinterlegungsdatum: | 14 Jan 2020 13:29 |
| Letzte Änderung: | 14 Jan 2020 13:29 |
| PPN: | |
| Projekte: | Chinese Soc Composite Mat, NW Polytechn Univ, CMC Branch, Xian Golden Mountain Ceram Composites Co Ltd, NW Polytechn Univ |
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