为了提高吸附剂对特定重金属离子的吸附容量,采用离子印迹技术合成了一种具有磁性的铜离子印迹复合吸附剂(Cu(Ⅱ)-IMB).通过SEM、能谱、XRD、FTIR、振动样品磁强计(VSM)表征方法对Cu(Ⅱ)-IMB及其合成原料进行表征,对Cu(Ⅱ)-IMB吸附选择性和其他物理性质进行了研究.结果表明,Cu(Ⅱ)-IMB对印迹的Cu(Ⅱ)具有高的选择吸附性能,与非印迹磁性复合吸附剂(NIMB)、壳聚糖交联菌丝体吸附剂(CMB)和菌丝体吸附剂(MB)相比吸附容量可分别提高24%,33%和54%.Cu(Ⅱ)-IMB重复使用5次后,吸附容量比原来降低14%.该新型吸附剂具有良好的机械强度和重复使用性,具有磁性能够迅速从吸附后的溶液中分离出来,成本低廉能够大量生产.
A kind of Cu(Ⅱ)ion imprinted magnetic composite adsorbent(Cu(Ⅱ)-IMB)was synthesized by ion imprinting technique in order to improve the selective adsorption for certain heavy ions.SEM,EDX,XRD,FTIR and VSM were used to study the structure identification of Cu(Ⅱ)-IMB and its components.The selective adsorption and other physical characters of the composite adsorbent were stdudied.Results show that Cu(Ⅱ)-IMB has high selective adsorption for Cu(Ⅱ)in water,and its adsorption capacity can be improved by 24%,33%and 54%in contrast to NIMB,CMB and MB,respectively.The adsorption capacity is decreased by 14%after reuse for five times.This new adsorbent has a good mechanical intensity and reuse,it has magnetism and can be separated from solution quickly after adsorption.It is concluded that Cu(Ⅱ)-IMB is low and mass-produced.
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