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首页> 外文期刊>RSC Advances >Multifunctional Fe3O4@SiO2 nanoparticles for selective detection and removal of Hg2+ ion in aqueous solution
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Multifunctional Fe3O4@SiO2 nanoparticles for selective detection and removal of Hg2+ ion in aqueous solution

机译：多功能Fe3O4 @ SiO2纳米粒子，用于选择性检测和除去水溶液中Hg2 +离子

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摘要

In the present work, a multifunctional magnetic core-shell Fe3O4@SiO2 nanoparticle decorated with a rhodamine-based receptor, which exhibits high selectivity and sensitivity toward Hg2+ over other metal ions in aqueous solution, has been synthesized by the graft method and characterized by transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, vibrating sample magnetometry, and UV-vis absorption and fluorescence spectra. The multifunctional nanoparticles show superparamagnetic behavior, clear core-shell architecture, and also exhibit high optical sensing performance for the detection of Hg2+. The fluorogenical responses of RB-Fe3O4@SiO2 are stable under a broad pH range. Additionally, these nanoparticles show high performance in the magnetic separability and effective removal of excess Hg2+ in water via an external magnetic field. These results indicate that these multifunctional magnetic nanoparticles may find potential and practical applications for selective detection and simple removal of Hg2+ in environmental, toxicological, and biological fields.
机译：在本作本作中，通过接枝法合成了具有罗丹明基受体的多官能磁芯 - 壳Fe3O4纳米粒子，其用罗丹明基受体呈现出高选择性和对Hg2 +的Hg2 +敏感性，并通过移植方法合成，并通过透射来表征电子显微镜，傅里叶变换红外光谱，X射线衍射，振动样品磁体和UV-Vis吸收和荧光光谱。多功能纳米颗粒显示超顺磁性行为，透明核心壳体架构，并表现出用于检测HG2 +的高光学传感性能。 RB-Fe3O4 @ SiO 2的荧光响应在宽pH范围内稳定。另外，这些纳米颗粒在磁性可分子中显示出高性能，并通过外部磁场在水中有效地除去过量的HG2 +。这些结果表明，这些多功能磁性纳米粒子可以找到用于在环境，毒理学和生物领域的选择性检测和简单去除HG2 +的潜在和实际应用。

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  • 来源
    《RSC Advances》 |2015年第15期|共9页
  • 作者

    Sun Zebin; Guo Dan; Li Haizhen; Zhang Li; Yang Bo; Yan Shiqiang;

  • 作者单位

    Lanzhou Univ Coll Chem &

    Chem Engn Lanzhou 730000 Peoples R China;

    Lanzhou Univ Coll Chem &

    Chem Engn Lanzhou 730000 Peoples R China;

    Lanzhou Univ Coll Chem &

    Chem Engn Lanzhou 730000 Peoples R China;

    Lanzhou Univ Coll Chem &

    Chem Engn Lanzhou 730000 Peoples R China;

    Lanzhou Univ Coll Chem &

    Chem Engn Lanzhou 730000 Peoples R China;

    Lanzhou Univ Coll Chem &

    Chem Engn Lanzhou 730000 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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