Jinxiao Wang, Jianfeng Yang, Jun Yang, Hui Zhang
State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China.
Nanotechnology. 2020 Sep 25;31(39):394002. doi: 10.1088/1361-6528/ab967c. Epub 2020 May 26.
The exploitation of carbon nanotube (CNT) and metal-organic framework (MOF) composite materials has been highly desirable in a number of applications. However, the construction of high dispersibility and stability CNT/MOF complex structures is still an enormous challenge. Herein, a novel assembly method is established for the construction of a CNT/Ni-MOF (0.1 CNT/MOF, 0.2 CNT/MOF, 0.3 CNT/MOF) interpenetrated structure by a solvothermal process. The MOFs can be robustly anchored on the surface of CNTs. Through a series of characterizations, the MOF can be comfortably integrated into the CNT fibers, which exhibits the enhancement of carrier mobility and fluorescence properties. The microwave absorption properties of the CNT/MOF are explored by a vector network analyzer. The 0.1 CNT/MOF has a maximum absorption of -9.2 dB at 18 GHz with a thickness of 5 mm, while the 0.2 CNT/MOF has a maximum absorption of -24.32 dB at 4.5 GHz with a thickness of 5 mm, a performance maximum. Therefore, the 0.2 CNT/MOF structures are potential candidates to ameliorate the microwave absorption properties.
在许多应用中，碳纳米管（CNT）与金属有机框架（MOF）复合材料的开发一直备受期待。然而，构建具有高分散性和稳定性的CNT/MOF复合结构仍然是一个巨大的挑战。在此，通过溶剂热法建立了一种新颖的组装方法，用于构建CNT/Ni-MOF（0.1 CNT/MOF、0.2 CNT/MOF、0.3 CNT/MOF）互穿结构。MOF能够牢固地锚定在CNT表面。通过一系列表征，MOF可以很好地整合到CNT纤维中，这表现出载流子迁移率和荧光性能的增强。利用矢量网络分析仪探索了CNT/MOF的微波吸收特性。0.1 CNT/MOF在18 GHz处厚度为5 mm时最大吸收为-9.2 dB，而0.2 CNT/MOF在4.5 GHz处厚度为5 mm时最大吸收为-24.32 dB，性能最佳。因此，0.2 CNT/MOF结构是改善微波吸收性能的潜在候选材料。
