Microwave absorption enhancement of Fe₃O₄/polyaniline core/shell hybrid microspheres with controlled shell thickness

Synthesis of Fe 3 O 4 /polyaniline (PANI) core/shell hybrid microspheres through an in situ polymerization route with the 300 nm Fe 3 O 4 microspheres as the cores and nucleation sites for PANI is reported. PANI shell thickness, from 30 nm to 120 nm, can be controlled by modulating the weight ratio of aniline monomer and Fe 3 O 4 microspheres. Fe 3 O 4 microspheres that are actually comprised of many small nanoparticles display super...