Chemical One Step Method to Prepare Polyaniline Nanofibers with Electromagnetic Function

Abstract

Abstract A “Chemical one step method” (COSM) is proposed to prepare electromagnetic functional composite nanofibers of polyaniline (PANI/ γ ‐Fe 2 O 3 ) having a diameter of ≈20 nm. In this approach FeCl 3 is acts as the oxidant either for polymerization of aniline or for preparation of γ ‐Fe 2 O 3 magnets. Besides, it also provides protons produced by the hydrolysis process for doping PANI. It is found that the composite nanofibers have a high conductivity (10 −1 ∼ 10 0 S · cm −1 ) and super‐paramagnetic properties ( M s = 0.46 ∼ 6.03 emu · g −1 and H c = 0) at room temperature, where the conductivity is mainly affected by the molar ratio of FeCl 3 to aniline monomer whereas the magnetic properties are dominated by the amount of FeCl 2 . magnified image