Synthesis and characterization of monodisperse hematite nanoparticles modified by surfactants via hydrothermal approach
作者： Zhihong Jing , Shihua Wu
DOI: 10.1016/J.MATLET.2004.07.010
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摘要: Abstract Monodisperse rhombohedral α-Fe 2 O 3 nanoparticles modified by four different surfactants, sodium dodecylsulfonate (SDS), dodecylebenzene sulphonate (DBS), cetyltrimethyl ammonium bromide (CTAB) and hexadecyipyridinium chloride (HPC), have been synthesized via hydrothermal method, using FeC 4 NaOH as starting precursors. Meanwhile, monodisperse rodlike without surfactant are also prepared under the same conditions for comparison. The products were characterized means of Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), transmission electron micrograph (TEM) magnetization measurements. with all exhibit weak ferromagnetic properties at room temperature, except somewhat variation in coercivity values. experimental results suggest that surfactants can significantly influence size shape particles, but cannot affect their magnetic nature.
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