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首页> 外文期刊>Journal of materials science >Magnetite nanoparticles functionalized with polypyrrole by pulsed sono-electrocrystallization and their applications for water treatment
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Magnetite nanoparticles functionalized with polypyrrole by pulsed sono-electrocrystallization and their applications for water treatment

机译:脉冲声电结晶法将聚吡咯官能化的磁铁矿纳米颗粒及其在水处理中的应用

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摘要

The influence of ultrasonic irradiation on structural and magnetic properties of functionalized magnetite/polypyrrole nanoparticles synthesized by the pulsed sono-electrocrystallization method was studied. X-ray diffraction patterns confirm that all samples have the inverse cubic spinel structure of magnetite. High-resolution transmission electron microscope images showed the formation of core/shell structure of iron oxide/polypyrrole nanoparticles. Electron microscope images demonstrate that an ultrasound wave produces significant changes in the particle size and morphology. Iron is almost all in the 55–100 nm particles of slightly nonstoichiometric Fe~(3−δ)O~(4), with 0.04 ≤ δ ≤ 0.14. The specific magnetization of the magnetite nanoparticles ranging from 45 to 75 Am_(2) kg_(−1)depends on the particle size, applied amplitude, and cycle of ultrasound waves. The application of magnetite/polypyrrole nanoparticles in removal of copper, nickel and cobalt from water was studied. The AAS results showed the magnetite nanoparticles functionalized by polypyrrole are particularly effective materials for copper, nickel and cobalt removal from water.
机译:研究了超声波对脉冲声电结晶法合成的功能化磁铁矿/聚吡咯纳米颗粒的结构和磁性的影响。 X射线衍射图证实所有样品都具有磁铁矿的倒立方尖晶石结构。高分辨率透射电子显微镜图像显示了氧化铁/聚吡咯纳米颗粒的核/壳结构的形成。电子显微镜图像表明,超声波会在粒径和形态上产生重大变化。铁几乎全部存在于55〜100 nm的非化学计量的Fe〜(3-δ)O〜(4)粒子中,其中0.04≤δ≤0.14。磁铁矿纳米粒子的比磁化强度介于45至75 Am_(2)kg _(-1)之间,具体取决于粒径,施加的振幅和超声波的周期。研究了磁铁矿/聚吡咯纳米颗粒在去除水中铜,镍和钴中的应用。原子吸收光谱法的结果表明,由聚吡咯官能化的磁铁矿纳米粒子是从水中去除铜,镍和钴的特别有效的材料。

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  • 来源
    《Journal of materials science》 |2018年第14期|12466-12476|共11页
  • 作者单位
  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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