Dependence of Particle Size and Shape of Polyaniline Nanoparticle on the Time of Ultrasonic Irradiation Reaction

In this article, polyaniline (PANI) nanoparticles in the uniform size (3.2-10 nm in diameter) were successfully prepared by ultrasonic irradiation method at different times in the presence of hydrochloric acid as a dopant and ammonium peroxydisulfate (APS) as an oxidant. The dependence of particle size, morphologies, and crystallinity on the time of ultrasonic irradiation reaction was studied using transmission electron microscope (TEM) images, and X-ray diffraction (XRD). The data indicated that, the particle size was increased with increasing the time of reaction. The vibrational structure and electronic transition were studied using FTIR and UV-VIS spectroscopic techniques. All data confirmed that, the particle size of polyaniline nanoparticle was increased with increasing the time of ultrasonic irradiation reaction.