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以Cu(Ⅱ)为模板离子、丙烯腈为功能单体,苯乙烯(St)为骨架单体,偶氮二异丁腈为引发剂,二乙烯苯为交联剂制备了铜离子印迹丙烯腈-co-苯乙烯微球(Cu-I-AN-co-St);用UV、FTIR、SEM和FAAS表征了聚合物和分析了Cu-I-AN-co-St对Cu(Ⅱ)的选择性吸附;结果表明,在室温下溶液pH为5～6,吸附时间为60 min时吸附达到平衡,最佳吸附条件下,饱和吸附容量可达到49.1 mg/g;以1 mol/L HCl溶液作为解吸剂其解吸率可达98%;与相应非印迹微球(NI-AN-co-St)相比,Cu(Ⅱ)I-AN-co-St对Cu(II)的吸附量增大并具有选择性;与电荷相同及离子半径相近的Zn(Ⅱ)、Ni(Ⅱ)、Cd(Ⅱ)共存时,其相对选择性系数分别为28.2,24.8,44.4。
Copper ion imprinted acrylonitrile was prepared by using Cu (Ⅱ) as template ion, acrylonitrile as functional monomer, styrene (ST) as backbone monomer, azobisisobutyronitrile as initiator and divinylbenzene as crosslinking agent The polymer was characterized by UV, FTIR, SEM and FAAS and the Cu (II) selectivity was analyzed by Cu-I-AN-co-St The results showed that the equilibrium adsorption was achieved when the pH value of the solution was 5 ~ 6 and the adsorption time was 60 min at room temperature. Under the optimal adsorption conditions, the adsorption capacity reached 49.1 mg / g. With 1 mol / L HCl solution as Desorption agent desorption rate of up to 98%; Compared with the corresponding non-imprinted microspheres (NI-AN-co-St), Cu (Ⅱ) I-AN-co-St of Cu (II) The selectivity coefficients of Zn (Ⅱ), Ni (Ⅱ) and Cd (Ⅱ) with the same charge and similar ionic radius are 28.2, 24.8 and 44.4 respectively.