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An inorganic-organic hybrid material made of a silica-immobilized Schiff base receptor and its preliminary use in heavy metal removal

机译:由二氧化硅固定化的席夫碱基受体制成的无机有机杂化材料及其在重金属中的初步用途

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摘要

A novel and excellent host for heavy metals was synthesized by chemical immobilization of a (E)-4-(( pyridin-2-yl-methylene)amino)phenol Schiff base receptor onto silica particles. The new hybrid material (SPSB) was analyzed and evaluated by elemental analysis, FT-IR spectroscopy, solid-state C-13 NMR, scanning electron microscopy, BET surface area and BJH analyses. The surface exhibits good thermal stability determined by thermogravimetry and good chemical stability examined in various acidic and buffer solutions (pH 1-7). The coordination ability of SPSB was found to be most efficient in the pH range 6.5-8 for Hg2+, Cd2+, Pb2+ and Zn2+. Alkali coexisting ions did not interfere with separation and determination. The adsorbent can be regenerated at ease without destruction. Heavy metal removal performance (99 mg g(-1)) was found to be higher compared to previous literature reports.
机译:通过将(E)-4-((吡啶-2-基 - 亚甲基)氨基)苯酚Schiff碱基受体的化学固定在二氧化硅颗粒上,通过化学固定化合成了重金属的新颖和优异的重质宿主。 通过元素分析,FT-IR光谱,固态C-13 NMR,扫描电子显微镜,BET表面积和BJH分析来分析和评估新的混合材料(SPSB)。 该表面表现出通过热再生测定的良好的热稳定性,并在各种酸性和缓冲溶液中检查的良好化学稳定性(pH 1-7)。 发现SPSB的配位能力在HG2 +,CD2 +,PB2 +和ZN2 +中的pH范围内最有效。 碱共存离子不会干扰分离和测定。 吸附剂可以在不破坏的情况下放松再生。 与先前的文献报告相比,发现重金属去除性能(99mg(-1))较高。

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  • 来源
    《RSC Advances》 |2016年第41期|共7页
  • 作者单位

    Univ Mohamed I Fac Sci LCAE Oujda 60000 Morocco;

    Univ Mohamed I Fac Sci LCAE Oujda 60000 Morocco;

    Univ Sci &

    Technol Lille Equipe Ingn Syst Polymeres Unite Mat &

    Transformat UMR8207 UMET Batiment C6 Salle F-11959655 Villeneuve Dascq France;

    Univ Sci &

    Technol Lille Equipe Ingn Syst Polymeres Unite Mat &

    Transformat UMR8207 UMET Batiment C6 Salle F-11959655 Villeneuve Dascq France;

    King Saud Univ Fac Sci Dept Chem POB 2455 Riyadh 11451 Saudi Arabia;

    Catholic Univ Louvain Inst Condensed Matter &

    Nanosci Mol Solids Reacti Pl Louis Pasteur 1 B-1348 Louvain La Neuve Belgium;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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