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This study aims to determine which nickel-based MOF derivative exhibits better microwave absorption performance.

High-Performance Electromagnetic Wave Absorbers Based on Two Kinds of Nickel-Based MOF-Derived Ni@C Microspheres

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Randomized trial demonstrates superior microwave absorption in Ni@C composites, indicating design opportunities.

This study aims to determine which nickel-based MOF derivative exhibits better microwave absorption performance.
Synthesize Ni@C microspheres derived from two nickel-based MOFs (Ni-ZIF and Ni-BTC).
Characterize compositions, morphologies, and electromagnetic properties of the derived composites.
Evaluate microwave absorption performance at various thicknesses and frequencies.
Ni@C derived from Ni-ZIF shows better performance with a reflection loss of -86.8 dB at 13.2 GHz.
Effective absorption bandwidth of Ni@C-ZIF is 7.4 GHz (4-11.4 GHz) for thicknesses between 1.5 to 4.0 mm.
Impacts of impedance matching and N-doping are critical for enhancing microwave attenuation.

Yan et al. (2019) studied this question.

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