PDF(Pubmed)
Abstract：
Selective metal ions\' extraction and recovery has various applications in the analytical field. Metal ions need to be extracted, detected, and quantified. For that purpose, ion-imprinted polymers have earned a great deal of attention during the past two decades. Pd2+ ion-imprinted hollow silica particles including an isatin Schiff base were prepared by Schiff base condensation of (3-aminopropyl)triethoxysilane and isatin. The prepared Schiff base ligand was coordinated to the target Pd2+ cations, the polymerizable Pd-complex was set aside to form gel in the company of tetraethoxysilane and the target Pd2+ cations were subsequently removed from the cross-linked silica network by means of acidified thiourea solution. All materials throughout this synthesis process were investigated utilizing mass spectrometry, elemental analysis, FTIR, and 1H-NMR. The morphological structure of both Pd2+ ion-imprinted and non-ion-imprinted silica polymer were pictured by scanning electron microscopy. Several batches were studied exploiting both Pd2+ ion-imprinted and non-ion-imprinted silica polymer to test their functionality for selective extraction of Pd2+ cations in multi-ionic solution of Ni2+, Co2+, Cu2+, Mn2+, and Pd2+.
摘要：
选择性金属离子的提取和回收在分析领域有多种应用。需要提取金属离子,检测到,和量化。为此,在过去的二十年中，离子印迹聚合物赢得了广泛的关注。通过（3-氨基丙基）三乙氧基硅烷和Isatin的Schiff碱缩合制备了包含IsatinSchiff碱的Pd2离子印迹中空二氧化硅颗粒。制备的席夫碱配体与目标Pd2+阳离子配位，在四乙氧基硅烷的作用下,留出可聚合的Pd-络合物以形成凝胶,随后通过酸化的硫脲溶液从交联的二氧化硅网络中除去目标Pd2+阳离子。整个合成过程中的所有材料都使用质谱进行了研究，元素分析,FTIR,和1H-NMR。通过扫描电子显微镜描绘了Pd2离子印迹和非离子印迹二氧化硅聚合物的形态结构。研究了几批Pd2离子印迹和非离子印迹二氧化硅聚合物，以测试其在Ni2多离子溶液中选择性萃取Pd2阳离子的功能，Co2+,Cu2+,Mn2+,和Pd2+。
