Synthesis and Characterization of Sulfamic-Acid Functionalized Magnetic Fe_3O_4 Nanoparticles Coated by Poly(amidoamine) Dendrimer

摘要

Grafting of chlorosulfuric acid on the amino-functionalized Fe_3O_4 nanoparticles produced sulfamic acid-functionalized magnetic Fe_3O_4 nanoparticles as a novel organic-inorganic hybrid material, which was characterized with X-ray diffractometry (XRD), transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) spectroscopy, scanning electron spectroscopy, and magnetization measurements (VSM). The as-prepared nanocomposite with a narrow size distribution has the crystallite size from XRD (11 ± 4 nm) and particle size from TEM analysis (12.9 ± 0.4 nm) are consistent with each other. Magnetization measurements proved the su-perparamagnetic property of the product.