Abstract
MIL-100(Fe)-derived unique porous iron has excellent microwave-absorbing performance and exhibits dielectric loss mechanism. A great microwave reflection loss (RL) of − 75.3 dB can be obtained and its effective absorption bandwidth is 4 GHz. This excellent microwave absorption performance mainly originates from dielectric loss rather than magnetic loss of the incoming microwave field. The impedance matching, multiple reflection and scattering loss and interface polarization of the porous ions could be tuned by controlling the reaction temperature and gas environment. Meanwhile, this study provides a new inspiration and insight for preparing dielectric loss iron with an excellent microwave absorption performance, which encourages achievements light the way to the development of the dielectric loss metal absorbents.
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