为了提高壳聚糖(CS)对pb2+的去除能力,制备了印迹改性磁性交联壳聚糖(Pb-TMCS),采用FTIR、SEM和XRD对其结构和形态进行了表征,研究了Pb-TMCS对pb2+的吸附、脱附性能及选择性.结果表明:与CS相比,Pb-TMCS的表面孔隙和褶皱增多;Pb-TMCS引入了更多的-OH和-NH2;Pb-TMCS内部包覆磁性物质Fe3O4,Pb-TMCS对CS的相对选择性系数大于2;Pb-TMCS对pb2+的吸附量从CS的25.57 mg/g提高到45.26 mg/g,脱附3次后仍可重复使用.Pb-TMCS回收方便,对pb2+选择吸附性能好,无污染,在重金属废水处理中具有广阔的应用前景.
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