Co-Doped Porous Carbon/Carbon Nanotube Heterostructures Derived from ZIF-L@ZIF-67 for Efficient Microwave Absorption
Liming He,
Hongda Xu,
Yang Cui,
Jian Qi,
Xiaolong Wang,
Quan Jin
Affiliations
Liming He
The Key Laboratory of Automobile Materials (Ministry of Education), School of Materials Science and Engineering, Jilin University, 5988 Renmin Street, Changchun 130022, China
Hongda Xu
State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, International Center of Future Science, Jilin University, 2699 Qianjin Street, Changchun 130012, China
Yang Cui
The Key Laboratory of Automobile Materials (Ministry of Education), School of Materials Science and Engineering, Jilin University, 5988 Renmin Street, Changchun 130022, China
Jian Qi
State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
Xiaolong Wang
State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, International Center of Future Science, Jilin University, 2699 Qianjin Street, Changchun 130012, China
Quan Jin
The Key Laboratory of Automobile Materials (Ministry of Education), School of Materials Science and Engineering, Jilin University, 5988 Renmin Street, Changchun 130022, China
Carbon-based magnetic metal composites derived from metal–organic frameworks (MOFs) are promising materials for the preparation of broadband microwave absorbers. In this work, the leaf-like co-doped porous carbon/carbon nanotube heterostructure was obtained using ZIF-L@ZIF-67 as precursor. The number of carbon nanotubes can be controlled by varying the amount of ZIF-67, thus regulating the dielectric constant of the sample. An optimum reflection loss of −42.2 dB is attained when ZIF-67 is added at 2 mmol. An effective absorption bandwidth (EAB) of 4.8 GHz is achieved with a thickness of 2.2 mm and a filler weight of 12%. The excellent microwave absorption (MA) ability is generated from the mesopore structure, uniform heterogeneous interfaces, and high conduction loss. The work offers useful guidelines to devise and prepare such nanostructured materials for MA materials.
