Yenni Darvina; Desnita Desnita; Rahadian Zainul; Imtiaz Ali Laghari; Azril Azril; Mohammad Abdullah
Abstract
In this study, the synthesis of Fe3O4 /PANI nanocomposites is achieved by employing a spin coating technique, which involves the initial preparation of Fe2O3 from iron sand through ...
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In this study, the synthesis of Fe3O4 /PANI nanocomposites is achieved by employing a spin coating technique, which involves the initial preparation of Fe2O3 from iron sand through magnetic separation and ball milling. The Fe3O4 precursor is then combined with polyaniline (PANI) at different concentrations (30%, 40%, 50%, 60%, and 70%) using a sol-gel process. The resulting Fe3O4 /PANI gel mixture is spin-coated onto glass substrates and dried. The nanocomposite films undergo extensive characterization through X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Vibration Sample Magnetometry (VSM), and electrical measurements using an LCR meter. Our findings show a correlation between Fe3O4 concentrations and crystal size, observed as a decrease from 30% to 40%, an increase at 50%, and a subsequent decrease from 60% to 70%. Fourier-transform infrared spectroscopy (FTIR) confirms the chemical bonding between Fe3O4 Fe2O3 and PANI. SEM images reveal the layer thickness varies with concentration, measured as 5.02 µm, 16.54 µm, 17.82 µm, 19.36 µm, and 24.4 µm, respectively. Electrical properties indicate resistance values of 7.36 mΩ, 8.388 mΩ, 8.101 mΩ, 8.53 mΩ, and 3.53 mΩ for the respective Fe3O4 concentrations, with corresponding capacitance values. This study elucidates the structural and electrical properties of Fe3O4 /PANI nanocomposites, highlighting their potential for diverse applications.
