Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Multifunctional Magnetic Ti3C2Tx MXene/Graphene Aerogel with Superior Electromagnetic Wave Absorption Performance
ACS Nano ( IF 15.8 ) Pub Date : 2021-03-29 , DOI: 10.1021/acsnano.0c09982 Luyang Liang 1 , Qianming Li 1 , Xu Yan 2 , Yuezhan Feng 1 , Yaming Wang 1 , Hao-Bin Zhang 3 , Xingping Zhou 4 , Chuntai Liu 1 , Changyu Shen 1 , Xiaolin Xie 4
ACS Nano ( IF 15.8 ) Pub Date : 2021-03-29 , DOI: 10.1021/acsnano.0c09982 Luyang Liang 1 , Qianming Li 1 , Xu Yan 2 , Yuezhan Feng 1 , Yaming Wang 1 , Hao-Bin Zhang 3 , Xingping Zhou 4 , Chuntai Liu 1 , Changyu Shen 1 , Xiaolin Xie 4
Affiliation
|
Ingenious microstructure design and a suitable multicomponent strategy are still challenging for advanced electromagnetic wave absorbing (EMA) materials with strong absorption and a broad effective absorption bandwidth (EAB) at thin sample thickness and low filling level. Herein, a three-dimensional (3D) dielectric Ti3C2Tx MXene/reduced graphene oxide (RGO) aerogel anchored with magnetic Ni nanochains was constructed via a directional-freezing method followed by the hydrazine vapor reduction process. The oriented cell structure and heterogeneous dielectric/magnetic interfaces benefit the superior absorption performance by forming perfect impedance matching, multiple polarizations, and electric/magnetic-coupling effects. Interestingly, the prepared ultralight Ni/MXene/RGO (NiMR-H) aerogel (6.45 mg cm–3) delivers the best EMA performance in reported MXene-based absorbing materials up to now, with a minimal reflection loss (RLmin) of −75.2 dB (99.999 996% wave absorption) and a broadest EAB of 7.3 GHz. Furthermore, the excellent structural robustness and mechanical properties, as well as the high hydrophobicity and heat insulation performance (close to air), guarantee the stable and durable EMA application of the NiMR-H aerogel to resist deformation, water or humid environments, and high-temperature attacks.
中文翻译：
具有出色电磁波吸收性能的多功能Ti 3 C 2 T x MXene /石墨烯磁性气凝胶
对于在薄样品厚度和低填充水平下具有强吸收能力和宽有效吸收带宽（EAB）的先进电磁波吸收（EMA）材料而言，巧妙的微结构设计和合适的多组分策略仍然面临挑战。在此，三维（3D）电介质的Ti 3 c ^ 2 Ť X与磁性镍纳米链锚定MXene /还原的石墨烯氧化物（RGO）气凝胶构建通过定向冻结方法，然后进行肼蒸气还原过程。定向的单元结构和异质介电/磁界面通过形成完美的阻抗匹配，多极化和电/磁耦合效应而受益于出色的吸收性能。有趣的是，到目前为止，所制备的超轻Ni / MXene / RGO（NiMR-H）气凝胶（6.45 mg cm –3）在报道的基于MXene的吸收材料中提供了最佳的EMA性能，并且反射损失最小（RL min）-75.2 dB（99.999 996％的波吸收）和7.3 GHz的最宽EAB。此外，出色的结构坚固性和机械性能，以及高疏水性和隔热性能（接近空气），确保了NiMR-H气凝胶的稳定和持久EMA应用，可抵抗变形，水或潮湿环境，并具有很高的耐高温性。温度攻击。
更新日期：2021-04-28
中文翻译：
具有出色电磁波吸收性能的多功能Ti 3 C 2 T x MXene /石墨烯磁性气凝胶
对于在薄样品厚度和低填充水平下具有强吸收能力和宽有效吸收带宽（EAB）的先进电磁波吸收（EMA）材料而言，巧妙的微结构设计和合适的多组分策略仍然面临挑战。在此，三维（3D）电介质的Ti 3 c ^ 2 Ť X与磁性镍纳米链锚定MXene /还原的石墨烯氧化物（RGO）气凝胶构建通过定向冻结方法，然后进行肼蒸气还原过程。定向的单元结构和异质介电/磁界面通过形成完美的阻抗匹配，多极化和电/磁耦合效应而受益于出色的吸收性能。有趣的是，到目前为止，所制备的超轻Ni / MXene / RGO（NiMR-H）气凝胶（6.45 mg cm –3）在报道的基于MXene的吸收材料中提供了最佳的EMA性能，并且反射损失最小（RL min）-75.2 dB（99.999 996％的波吸收）和7.3 GHz的最宽EAB。此外，出色的结构坚固性和机械性能，以及高疏水性和隔热性能（接近空气），确保了NiMR-H气凝胶的稳定和持久EMA应用，可抵抗变形，水或潮湿环境，并具有很高的耐高温性。温度攻击。
京公网安备 11010802027423号