Synthesis of Advanced Polyaniline-Based Nanocomposites as Multi-Adsorbents for X-Ku Bands and UV-Visible-Near IR Ranges Using Carbon Nanofibers, Carbonyl Iron, Copper, WO۳, and Cs۰.۳WO۲.۷

The study focuses on multi-absorbers for X-Ku bands in the microwave (MW) and UV-Visible-Near Infrared (UVV-NIR) regions using WO۳, Cs۰.۳WO۲.۷, Cu, carbonyl iron (CI) nanoparticles (NPs), and carbon nanofibers (CNFs) incorporated into polyaniline (PANI) nanocomposites. The primary aim of this research was to evaluate the ability of these materials to endure radiation environments and function as multi-absorbers for military applications within the UVV-NIR and X-Ku band regions. For this purpose, all samples were subjected to three types of radiation (MW, UVV-NIR). The structural, electrical conductivity, phase composition, morphology, reflectivity, and absorption properties of the samples were characterized using FTIR, energy dispersive spectroscopy (EDX), the four-probe method, X-ray diffraction (XRD), scanning electron microscopy (SEM), ultraviolet-visible spectrophotometry, and a microwave vector network analyzer. Results showed that while pure Cs۰.۳WO۲.۷ exhibited low NIR shielding performance, WO۳ demonstrated promising optical characteristics, including high transmittance for visible light and effective NIR shielding properties. The findings indicated that the nanocomposite [(WO۳/Cs۰.۳WO۲.۷)۰.۲۵-PAA-(Cu/CI)۰.۲۵-PAA-(CNFs)۰.۲-PAA]-PANI۰.۳ exhibited excellent electric and magnetic properties, with an absorption bandwidth of ۱۰ GHz under -۱۰ dB.

کلیدواژه ها:

WO۳-Cs۰.۳WO۲.۷ ، Cu-carbonyl iron-carbon Nanofiber ، Polyaniline ، Multi-absorption ، Shielding ، Microwave-UV-visible-near infrared