» Articles » PMID: 38893301

Co-Doped Porous Carbon/Carbon Nanotube Heterostructures Derived from ZIF-L@ZIF-67 for Efficient Microwave Absorption

Overview
Journal Molecules
Publisher MDPI
Specialty Biology
Date 2024 Jun 19
PMID 38893301
Authors
Affiliations
Soon will be listed here.
Abstract

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.

References
1.
Yin P, Zhang L, Wang J, Feng X, Zhao L, Rao H . Preparation of SiO-MnFeO Composites via One-Pot Hydrothermal Synthesis Method and Microwave Absorption Investigation in S-Band. Molecules. 2019; 24(14). PMC: 6680861. DOI: 10.3390/molecules24142605. View

2.
Yin Y, Liu X, Wei X, Yu R, Shui J . Porous CNTs/Co Composite Derived from Zeolitic Imidazolate Framework: A Lightweight, Ultrathin, and Highly Efficient Electromagnetic Wave Absorber. ACS Appl Mater Interfaces. 2016; 8(50):34686-34698. DOI: 10.1021/acsami.6b12178. View

3.
Sun Q, Yang X, Shu T, Yang X, Qiao M, Wang D . In Situ Synthesis of C-N@NiFeO@MXene/Ni Nanocomposites for Efficient Electromagnetic Wave Absorption at an Ultralow Thickness Level. Molecules. 2023; 28(1). PMC: 9822367. DOI: 10.3390/molecules28010233. View

4.
Liu C, Lin L, Sun Q, Wang J, Huang R, Chen W . Site-specific growth of MOF-on-MOF heterostructures with controllable nano-architectures: beyond the combination of MOF analogues. Chem Sci. 2021; 11(14):3680-3686. PMC: 8152623. DOI: 10.1039/d0sc00417k. View

5.
Xu X, Ran F, Fan Z, Lai H, Cheng Z, Lv T . Cactus-Inspired Bimetallic Metal-Organic Framework-Derived 1D-2D Hierarchical Co/N-Decorated Carbon Architecture toward Enhanced Electromagnetic Wave Absorbing Performance. ACS Appl Mater Interfaces. 2019; 11(14):13564-13573. DOI: 10.1021/acsami.9b00356. View