A low-cost and high-yield production of magnetite nanorods with high saturation magnetization

• CHENGLIANG HAN ^[1] ; JINJIN MA ^[2] ; HANZHAO WU ^[1] ; YAOWEI ^[1] ; KUNHONG HU ^[1]
  1. [1] Hefei University Department of Chemical and Material Engineering
  2. [2] Nanjing University of Aeronautics and Astronautics Department of Material Science and Engineering
• Localización: Journal of the Chilean Chemical Society (Boletín de la Sociedad Chilena de Química), ISSN-e 0717-6309, ISSN 0366-1644, Vol. 60, Nº. 1, 2015, págs. 2799-2802
• Idioma: inglés
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• Resumen

  • Nanopowders of single-crystalline rod-like magnetite have been synthesized in a glycerol-water system under hydrothermal condition by using the goethite (α-FeOOH) precursor. The influence of different reaction parameters on the morphology and composition of the products have been investigated. The structure, morphology and magnetic properties of the products were characterized by X-ray diffraction (XRD), field emission scanning electron microscope (FESEM), transmission electron microscope (TEM) and superconducting quantum interference device (SQUID). The results show that every as-prepared Fe3O4 nanorod with diameter ca.70nm grows along the [110] direction which is one of easy magnetic axes of magnetite. The ratio of glycerol to water has a great effect on the purity at given temperature. Magnetic measurements indicated that the specific saturation magnetization (Ms) and coercivity values (Hc) of magnetite nanorods were 90 emu/g and 172Oe, respectively. An in situ dissolution-reduction-reassembling formation mechanism is recommended for as-synthesized magnetite nanorods.