High‐permittivity Solvents Increase MXene Stability and Stacking Order Enabling Ultraefficient Terahertz Shielding
Abstract 2D transition metal carbides and nitrides (MXenes) suggest an uncommonly broad combination of important functionalities amongst 2D materials. Nevertheless, MXene suffers from facile oxidation and colloidal instability upon conventional water‐based processing, thus limiting applicability. By...
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| Format: | Article |
| Language: | English |
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Wiley
2024-02-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202305099 |
| _version_ | 1797329409535901696 |
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| author | Xiaodan Hong Zhenyu Xu Zhong‐Peng Lv Zhen Lin Mohsen Ahmadi Linfan Cui Ville Liljeström Volodymyr Dudko Jiali Sheng Xiaoqi Cui Alexey P. Tsapenko Josef Breu Zhipei Sun Qiang Zhang Esko Kauppinen Bo Peng Olli Ikkala |
| author_facet | Xiaodan Hong Zhenyu Xu Zhong‐Peng Lv Zhen Lin Mohsen Ahmadi Linfan Cui Ville Liljeström Volodymyr Dudko Jiali Sheng Xiaoqi Cui Alexey P. Tsapenko Josef Breu Zhipei Sun Qiang Zhang Esko Kauppinen Bo Peng Olli Ikkala |
| author_sort | Xiaodan Hong |
| collection | DOAJ |
| description | Abstract 2D transition metal carbides and nitrides (MXenes) suggest an uncommonly broad combination of important functionalities amongst 2D materials. Nevertheless, MXene suffers from facile oxidation and colloidal instability upon conventional water‐based processing, thus limiting applicability. By experiments and theory, It is suggested that for stability and dispersibility, it is critical to select uncommonly high permittivity solvents such as N‐methylformamide (NMF) and formamide (FA) (εr = 171, 109), unlike the classical solvents characterized by high dipole moment and polarity index. They also allow high MXene stacking order within thin films on carbon nanotube (CNT) substrates, showing very high Terahertz (THz) shielding effectiveness (SE) of 40–60 dB at 0.3–1.6 THz in spite of the film thinness < 2 µm. The stacking order and mesoscopic porosity turn relevant for THz‐shielding as characterized by small‐angle X‐ray scattering (SAXS). The mechanistic understanding of stability and structural order allows guidance for generic MXene applications, in particular in telecommunication, and more generally processing of 2D materials. |
| first_indexed | 2024-03-08T07:05:17Z |
| format | Article |
| id | doaj.art-ebd068151e804db69fae979ce7bad1ef |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-03-08T07:05:17Z |
| publishDate | 2024-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-ebd068151e804db69fae979ce7bad1ef2024-02-03T05:02:44ZengWileyAdvanced Science2198-38442024-02-01115n/an/a10.1002/advs.202305099High‐permittivity Solvents Increase MXene Stability and Stacking Order Enabling Ultraefficient Terahertz ShieldingXiaodan Hong0Zhenyu Xu1Zhong‐Peng Lv2Zhen Lin3Mohsen Ahmadi4Linfan Cui5Ville Liljeström6Volodymyr Dudko7Jiali Sheng8Xiaoqi Cui9Alexey P. Tsapenko10Josef Breu11Zhipei Sun12Qiang Zhang13Esko Kauppinen14Bo Peng15Olli Ikkala16Department of Applied Physics Aalto University Espoo 02150 FinlandDepartment of Applied Physics Aalto University Espoo 02150 FinlandDepartment of Applied Physics Aalto University Espoo 02150 FinlandDepartment of Applied Physics Aalto University Espoo 02150 FinlandDepartment of Electronics and Nanoengineering Aalto University Espoo 02150 FinlandDepartment of Electronics and Nanoengineering Aalto University Espoo 02150 FinlandNanomicroscopy Center OtaNano Aalto University Espoo 02150 FinlandBavarian Polymer Institute and Department of Chemistry University of Bayreuth D‐95447 Bayreuth GermanyDepartment of Applied Physics Aalto University Espoo 02150 FinlandDepartment of Electronics and Nanoengineering Aalto University Espoo 02150 FinlandDepartment of Applied Physics Aalto University Espoo 02150 FinlandBavarian Polymer Institute and Department of Chemistry University of Bayreuth D‐95447 Bayreuth GermanyDepartment of Electronics and Nanoengineering Aalto University Espoo 02150 FinlandDepartment of Applied Physics Aalto University Espoo 02150 FinlandDepartment of Applied Physics Aalto University Espoo 02150 FinlandDepartment of Applied Physics Aalto University Espoo 02150 FinlandDepartment of Applied Physics Aalto University Espoo 02150 FinlandAbstract 2D transition metal carbides and nitrides (MXenes) suggest an uncommonly broad combination of important functionalities amongst 2D materials. Nevertheless, MXene suffers from facile oxidation and colloidal instability upon conventional water‐based processing, thus limiting applicability. By experiments and theory, It is suggested that for stability and dispersibility, it is critical to select uncommonly high permittivity solvents such as N‐methylformamide (NMF) and formamide (FA) (εr = 171, 109), unlike the classical solvents characterized by high dipole moment and polarity index. They also allow high MXene stacking order within thin films on carbon nanotube (CNT) substrates, showing very high Terahertz (THz) shielding effectiveness (SE) of 40–60 dB at 0.3–1.6 THz in spite of the film thinness < 2 µm. The stacking order and mesoscopic porosity turn relevant for THz‐shielding as characterized by small‐angle X‐ray scattering (SAXS). The mechanistic understanding of stability and structural order allows guidance for generic MXene applications, in particular in telecommunication, and more generally processing of 2D materials.https://doi.org/10.1002/advs.202305099Janus filmMXenepermittivitystabilityterahertz shieldingX‐ray scattering |
| spellingShingle | Xiaodan Hong Zhenyu Xu Zhong‐Peng Lv Zhen Lin Mohsen Ahmadi Linfan Cui Ville Liljeström Volodymyr Dudko Jiali Sheng Xiaoqi Cui Alexey P. Tsapenko Josef Breu Zhipei Sun Qiang Zhang Esko Kauppinen Bo Peng Olli Ikkala High‐permittivity Solvents Increase MXene Stability and Stacking Order Enabling Ultraefficient Terahertz Shielding Advanced Science Janus film MXene permittivity stability terahertz shielding X‐ray scattering |
| title | High‐permittivity Solvents Increase MXene Stability and Stacking Order Enabling Ultraefficient Terahertz Shielding |
| title_full | High‐permittivity Solvents Increase MXene Stability and Stacking Order Enabling Ultraefficient Terahertz Shielding |
| title_fullStr | High‐permittivity Solvents Increase MXene Stability and Stacking Order Enabling Ultraefficient Terahertz Shielding |
| title_full_unstemmed | High‐permittivity Solvents Increase MXene Stability and Stacking Order Enabling Ultraefficient Terahertz Shielding |
| title_short | High‐permittivity Solvents Increase MXene Stability and Stacking Order Enabling Ultraefficient Terahertz Shielding |
| title_sort | high permittivity solvents increase mxene stability and stacking order enabling ultraefficient terahertz shielding |
| topic | Janus film MXene permittivity stability terahertz shielding X‐ray scattering |
| url | https://doi.org/10.1002/advs.202305099 |
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