• naphthalimide-functionalized fe3o4@sio2 core/shell nanoparticles for selective and sensitive adsorption and detection of hg2+

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/01/01
    • تاریخ انتشار در تی پی بین: 1392/01/01
    • تعداد بازدید: 698
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     a novel 1,8-naphthalimide-functionalized fe3o4@sio2 core/shell magnetic fluorescent nanoparticles (mfnps) for simultaneous detection and adsorption of hg2+ was designed and synthesized. a series of adsorption studies were carried out with various hg2+ concentrations, temperature, time and ph. the maximum adsorption capacity is higher than 30 mg/g over a broad temperature (0 °c, 25 °c, and 50 °c) and ph (4–10). the results showed that mfnps possesses an excellent reusability and the high adsorption specificity toward hg2+. the detection limit for hg2+ is 3.4 nm. in addition, owing to the aggregation of mfnps occurring in the hg2+ aqueous solution, the adsorbent was separated easily by the settlement or the external magnetic field, which facilitated the removal of hg2+.

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