Recent Advances in Metal-Organic Frameworks for Electromagnetic Wave Absorption

Area of Science:

• Materials Science
• Nanotechnology
• Electromagnetics

Background:

• Increasing electromagnetic pollution necessitates advanced wave absorption materials.
• Metal-organic frameworks (MOFs) offer tunable properties, high porosity, and diverse structures for this application.
• Conductive MOFs (cMOFs) are emerging as intrinsic electromagnetic wave absorbers.

Purpose of the Study:

• To comprehensively review recent advancements in MOF derivatives and cMOF-based electromagnetic wave absorbers.
• To focus on design strategies, absorption performance, and loss mechanisms.
• To provide guidelines and perspectives for future development of MOF-based absorbers.

Main Methods:

• Classification and summarization of recent research on MOF derivatives and cMOFs.
• Analysis of compositional and structural engineering strategies.
• Evaluation of absorption performance metrics (reflection loss, bandwidth) and loss mechanisms (dielectric, magnetic).

Main Results:

• MOF-derived composites demonstrate lightweight, broadband, and highly efficient absorption through diverse loss mechanisms.
• Pristine MOFs, particularly cMOFs, are effective intrinsic absorbers.
• Key design strategies, performance metrics, and loss mechanisms have been identified and analyzed.

Conclusions:

• MOF-based materials are highly promising for lightweight, broadband, and efficient electromagnetic wave absorption.
• Further research should focus on structural-functional integration and addressing development challenges.
• This review offers methodological guidance for fabricating advanced MOF absorption materials.