Chemistry Department, Faculty of Science, Universiti Putra Malaysia, Serdang, Selangor, Malaysia.
Institute of Advanced Technology, Universiti Putra Malaysia, Serdang, Selangor, Malaysia.
PLoS One. 2018 Apr 12;13(4):e0195546. doi: 10.1371/journal.pone.0195546. eCollection 2018.
In the present study, ion imprinted polymer monoliths (IIPMs) were developed to overcome the limitations of ion imprinted polymer particles (IIPPs) used for the removal of Hg(II) ions from waste water samples. The adsorbents preparation, characterization and Hg(II) removal were very well reported. The IIPMs on porogen optimization was prepared using the molding technique with Hg(II) as a template ion, [2-(methacryloyloxy)ethyl]trimethylammonium cysteine (MAETC) as ligand, methacrylic acid (MAA) as functional monomer, ethylene glycol dimethacrylamide (EGDMA) as cross-linker, benzoyl peroxide as an initiator and methanol and acetonitrile as porogen in the polypropylene tube (drinking straw) as mold. The IIPMs prepared with higher volumes of porogen were indicated to have a good adsorption rate for the Hg(II) removal along with good water permeability and larger porosity as compared to a lower volume of porogen. The IIPMs prepared using the binary porogen were able to improve the porosity and surface area of the monolithic polymers as compared to the single porogen added IIPMs. Finally, we indicate from our analysis that the IIPM having the efficient capacity for the Hg(II) ions is easy to prepare, and has higher water permeability along with high porosity and high adsorption capacity and all these factors making it one of the suitable adsorbent for the successful removal of Hg(II) ions.
在本研究中，制备了离子印迹聚合物整体柱（IIPMs）以克服用于从废水样品中去除 Hg(II)离子的离子印迹聚合物颗粒（IIPPs）的局限性。很好地报道了吸附剂的制备、表征和 Hg(II)去除。通过成型技术制备了优化致孔剂的 IIPMs，以 Hg(II)作为模板离子、[2-(甲基丙烯酰氧基)乙基]三甲基氯化铵半胱氨酸（MAETC）作为配体、甲基丙烯酸（MAA）作为功能单体、乙二醇二甲基丙烯酰胺（EGDMA）作为交联剂、过氧化苯甲酰作为引发剂，甲醇和乙腈作为致孔剂，在聚丙烯管（吸管）中作为模具。与低体积致孔剂相比，具有更高致孔剂体积的 IIPMs 表明具有良好的 Hg(II)去除吸附率以及良好的水渗透性和更大的孔隙率。与添加单致孔剂的 IIPMs 相比，使用二元致孔剂制备的 IIPMs 能够提高整体聚合物的孔隙率和比表面积。最后，我们从分析中表明，具有高效 Hg(II)离子容量的 IIPM 易于制备，具有较高的水渗透性、较高的孔隙率和较高的吸附容量，所有这些因素使其成为成功去除 Hg(II)离子的合适吸附剂之一。
