Pd-Catalyzed Transfer Hydrogenolysis of Primary, Secondary, and Tertiary Benzylic Alcohols by Formic Acid: A Mechanistic Study
prototype with tunable high intensities in double belts in the temperature range of 323−
473 K and X band. Maximum absorption in two absorbing belts can be simultaneously
tuned from ∼−10 to ∼−15 dB and from ∼−16 to ∼−25 dB by varying temperature,
respectively. The belt for reflection loss ≤−20 dB can almost cover the X band at 323 K.
The tunable microwave absorption is attributed to effective impedance matching,
benefiting from abundant interfacial polarizations and increased magnetic loss resulting from the grape-like Fe3O4 nanocrystals.
Temperature adjusts the impedance matching by changing both the dielectric and magnetic loss. The special assembly of
MWCNTs and magnetic loss nanocrystals provides an effective pathway to realize excellent absorbers at elevated temperature