Architectural Design and Microstructural Engineering of Metal–Organic Framework‐Derived Nanomaterials for Electromagnetic Wave Absorption

Abstract

Metal–organic frameworks (MOFs) derivatives are developing family of functional materials for electromagnetic wave (EMW) absorption. Their tailored structures, controllable compositions, high porosity, and versatile functions offer immense advantages for the construction of excellent EMW absorption materials. Nevertheless, it is crucial and challenging to understand the unique role of rationally designing art and tailoring the microstructures of MOF‐derived materials for EMW absorption. In this review, advances in rational architectural design strategy and the elaborate control of microstructures are outlined to promote the EMW absorption performance of MOF‐derived materials. In addition, the derived key information regarding the superiority and composition–structure–performance relationships of the engineered MOF‐derived materials with advanced components and nanostructures is comprehensively summarized. Finally, the insight into the challenges of future development in MOF‐derived EMW absorption materials is presented.

Ultra-broadband microwave absorption of (Mn0.2Fe0.2Zn1.2)x substituted Co2Y hexaferrites with a self-aligned sheet stacked, highly c-axis oriented and multi-domain structure

“…Apart from that, the attenuation constant ( α ) is also a key evaluation indicator of an ideal EMW absorber. α can be used to characterize the intrinsic attenuation capacity of the absorber, which can be can be evaluated using the following eqn (17): 65,66 …”

Integrated Electromagnetic Device with On‐Off Heterointerface for Intelligent Switching Between Wave‐Absorption and Wave‐Transmission

“…This phenomenon leads to an intensified attenuation of incident EMW via the alternating polarized field causing enhanced polarization loss. [ 44,45 ] According to Figure 4a, the polarization loss of OV 2 C‐2 at 70 °C (“1 state”) is higher than that at 25 °C (“0 state”). The SEM result shows that VO 2 grow on the surface of V 2 C, indicating that the heterointerfaces between V 2 C and VO 2 are the main source of polarization loss.…”

Structure–Activity Relationship in Microstructure Design for Electromagnetic Wave Absorption Applications

“…[6] Therefore, there is an urgent need to explore a feasible strategy for achieving controlling the EM properties of MAMs, enabling the production of high-performance MAMs with thin thickness, lightweight, wide absorption bandwidth, and strong absorption to navigate complex EM environments and embracing the intelligent era. [7][8][9] The microwave absorption (MA) performance of materials is greatly influenced by their intrinsic EM parameters. The physical and chemical characteristics, such as conductivity, permeability, and dielectric properties, as well as the morphology of materials affect the intrinsic EM parameters of materials, therefore affecting the MA performance.…”