Solid-state synthesis of iron oxide nanoparticles
    12.
    发明申请
    Solid-state synthesis of iron oxide nanoparticles 有权
    固态合成氧化铁纳米粒子

    公开(公告)号:US20080181843A1

    公开(公告)日:2008-07-31

    申请号:US11878864

    申请日:2007-07-27

    IPC分类号: C01G49/06

    摘要: The present disclosure includes a method for preparing an aqueous dispersion of γ-Fe2O3 nanoparticles. The method includes grinding an iron (II) hydrated salt, an iron (III) hydrated salt, an inorganic salt, and alkali hydroxide in a grinding or milling machine. The inorganic salt may be a salt matrix that prevents growth and aggregation of the synthesized nanoparticles. The aqueous dispersion of γ-Fe2O3 nanoparticles may optionally be hydrothermally treated to become an aqueous dispersion of α-Fe2O3 nanoparticles. Also disclosed is a method for preparing an mixture of α-Fe2O3 nanoparticles and γ-Fe2O3 nanoparticles, in which at least an iron (III) hydrated salt, an inorganic salt, and alkali hydroxide are ground in a grinding or milling machine. Uses for the nanoparticles include: a magnetic resonance image contrast agent, a color print ink, an artificial tanning pigment, a photocatalyst for degradation of organic dye, a red pigment, an adsorbent for waste water treatment, a catalyst support, and a catalyst.

    摘要翻译: 本公开内容包括制备γ-Fe 2 O 3纳米颗粒的水分散体的方法。 该方法包括在研磨或研磨机中研磨铁(II)水合盐,铁(III)水合盐,无机盐和碱金属氢氧化物。 无机盐可以是防止合成的纳米颗粒的生长和聚集的盐基质。 γ-Fe 2 O 3 N 3纳米颗粒的水性分散体可以任选地进行水热处理以成为α-Fe 2 O 3 N 2 O 3的水分散体 > 3 纳米颗粒。 还公开了制备α-Fe 2 O 3 N 3纳米颗粒和γ-Fe 2 O 3 N 3 O 3的混合物的方法, 其中至少一种铁(III)水合盐,无机盐和碱金属氢氧化物在研磨或研磨机中研磨。 用于纳米颗粒的方法包括:磁共振图像造影剂,彩色印刷油墨,人造鞣制颜料,有机染料降解用光催化剂,红色颜料,废水处理用吸附剂,催化剂载体和催化剂。