纳微快报（英文）2021，Vol.13Issue(10)：252-265,14.
3D Seed-Germination-Like MXene with In Situ Growing CNTs/Ni Heterojunction for Enhanced Microwave Absorption via Polarization and Magnetization
3D Seed?Germination?Like MXene with In Situ Growing CNTs/Ni Heterojunction for Enhanced Microwave Absorption via Polarization and Magnetization
摘要
Abstract
Ti3C2Tx MXene is widely regarded as a potential microwave absorber due to its dielectric multi-layered structure. However, missing magnetic loss capability of pure MXene leads to the unmatched electromagnetic parameters and unsatisfied impedance matching condition. Herein, with the inspiration from dielectric-magnetic synergy, this obstruction is solved by fabricating magnetic CNTs/Ni hetero-structure decorated MXene substrate via a facile in situ induced growth method. -Ni2+ ions are successfully attached on the surface and interlamination of each MXene unit by intensive electrostatic adsorption. Benefiting from the possible "seed-germination" effect, the "seeds" -Ni2+ grow into "buds" Ni nanoparticles and "stem" carbon nanotubes (CNTs) from the enlarged "soil" of MXene skeleton. Due to the improved impedance matching condition, the MXene-CNTs/Ni hybrid holds a superior microwave absorp tion performance of ? 56.4 dB at only 2.4 mm thickness. Such a distinctive 3D architecture endows the hybrids: (i) a large-scale 3D magnetic coupling network in each dielectric unit that leading to the enhanced magnetic loss capability, (ii) a massive multi-heterojunction interface structure that resulting in the reinforced polarization loss capability, confirmed by the off-axis electron holography. These outstanding results provide novel ideas for developing magnetic MXene-based absorbers.关键词
Microwave absorption/Two-dimensional materials/MXene/Magnetic coupling network/Synergistic effectKey words
Microwave absorption/Two-dimensional materials/MXene/Magnetic coupling network/Synergistic effect引用本文复制引用
Xiao Li,Wenbin You,Chunyang Xu,Lei Wang,Liting Yang,Yuesheng Li,Renchao Che..3D Seed-Germination-Like MXene with In Situ Growing CNTs/Ni Heterojunction for Enhanced Microwave Absorption via Polarization and Magnetization[J].纳微快报（英文）,2021,13(10):252-265,14.基金项目
This work was supported by the National Natural Science Foundation of China(51725101,11727807,51672050,61790581),the Ministry of Science and Technology of China(2018YFA0209102) （51725101,11727807,51672050,61790581）
