Amino-functionalized adsorbent prepared by means of Cu(II) imprinted method and its selective removal of copper from aqueous solutions
Amino-functionalized adsorbent prepared by means of Cu(II) imprinted method and its selective removal of copper from aqueous solutions
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DOI：
10.1016/j.jhazmat.2015.03.046
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发表时间：
2015-08-30
影响因子：
13.6
通讯作者：
Zhang, Yibo
中科院分区：
文献类型：
--
作者：
Peng, Wei;Xie, Zhenzhen;Zhang, Yibo
合成了一种氨基功能化修饰的金属离子印迹吸附剂，用于水溶液中Cu（II）的选择性萃取和去除。氨基功能化的离子印迹吸附剂的吸附容量显着高于文献报道的几种吸附剂。采用SEM、TEM、XPS、元素分析、FTIR等手段对炭基吸附剂进行了表征。吸附Cu（II）的最佳pH为5。吸附等温线符合Langmuir模型，吸附等温线与实验数据吻合较好，Cu（II）印迹吸附剂对Cu（II）的最大吸附容量为33.33 mg/g。该印迹材料对Cu（II）/Cd（II）、Cu（II）/Co（II）、Cu（II）/Ni（II）和Cu（II）/Zn（II）的选择性系数分别为31.8、90.2、38.6和36.1。它们分别是非印迹材料的10.6、6.22、7.11和39.2倍。高的吸附容量和选择性系数表明，该氨基功能化离子印迹吸附剂可以作为选择性吸附剂去除废水中的铜离子。本文以葡萄糖、四乙烯五胺（TEPA）和铜离子为模板剂，采用水热合成法制备了碳基吸附剂。(C)2015 Elsevier B. V.版权所有。
An amino-functionalized modified metal ion imprinting adsorbent was newly synthesized for the selective extraction and the removal of Cu(II) from aqueous solution. The adsorption capacity of the amino-functionalized ion-imprinted adsorbent was found to be significantly more than the several adsorbents reported in the literatures. The carbon based adsorbent was characterized by SEM, TEM, XPS, Elemental analysis and FTIR respectively. The optimum pH for Cu(II) adsorption was found to be 5. The adsorption equilibrium isotherm could be described by Langmuir model, the Langmuir isotherm has shown an agreement with experimental data, and the maximum adsorption capacity of copper ions for Cu(II) imprinted adsorbent was 33.33 mg/g. The selectivity coefficients of the imprinted material for Cu(II)/Cd(II), Cu(II)/Co(II), Cu(II)/Ni(II) and Cu(II)/Zn(II) were 31.8, 90.2,38.6 and 36.1, respectively. Those were 10.6, 6.22, 7.11 and 39.2 times greater than that of non-imprinted material, respectively. The high adsorption capacity and selectivity coefficient indicated that this amino-functionalized ion-imprinted adsorbent can be used as the selective adsorbent for the removal of copper ions from wastewater. In this work, glucose, tetraethylene pentamine (TEPA) and copper ions as template are combined together with specific mole radio for preparing carbon-based adsorbent by means of hydrothermal synthesis method. (C) 2015 Elsevier B.V. All rights reserved.