CTAB-Assisted Synthesis of N-Doped Fe3C Nanowires and Their Magnetic Properties

N-doped iron carbide (N-doped Fe3C) nanomaterials have a wide range of applications. In this study, a hexadecyltrimethylammonium bromide (CTAB)-assisted two-step process was used to prepare N-doped Fe3C nanomaterials. The effect of CTAB addition on the phase, structure, and morphologies of the products has been investigated in detail based on the characterization results of X-ray diffraction (XRD), scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS), Raman spectra (Raman), N2 adsorption–desorption, and elemental analysis. By tuning the amount of CTAB, N-doped Fe3C nanowires were prepared. The magnetic hysteresis loops at room temperature of the N-doped Fe3C nanomaterials show ferromagnetic characteristics.