• synthesis of bifunctional mesoporous silica spheres as potential adsorbent for ions in solution

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/01/01
    • تاریخ انتشار در تی پی بین: 1392/01/01
    • تعداد بازدید: 533
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     the immobilization of edta on si–apts composite was observed to occur in a stoichiometric relation of 2(apts):1(edta) with a degree of functionalization of 0.56 mmol g−1. based on ir and nmr data it was suggested that the immobilization results in a cavity with four nitrogen atoms inside and two carboxylate groups outside. surface area, total pore volume and average pore diameter, of the si–apts–edta spheres were determined, respectively, as 177.6 m2 g−1, 0.35 cm3 g−1 and 73.6 å. zeta potential (pzc = 5.0) and adsorption assays indicated a potential applicability of the si–apts–edta spheres as a bifunctional material since it was observed the adsorption of cations and anions.

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