以苯胺修饰的磁性碳纳米管为基质,Cd2+为模板,甲基丙烯酸为功能单体,乙二醇二甲基丙烯酸酯为交联剂,在碳纳米管表面制备出一种新型磁性Cd2印迹聚合物(MWNTs/MIIPs).采用扫描电子显微镜和红外光谱等技术手段对其形态和化学结构等进行详细表征.吸附试验结果表明,该磁性印迹材料对Cd2离子具有良好的吸附能力,最大吸附量为16.96 mmg/g;选择吸附试验结果表明,该磁性印迹材料对Cd2 +/Cu2、Cd2 +/Ni2、Cd2+/pb2和Cd2 +/Cr3+的相对选择因子分别是2.03、2.35、2.16和2.13.结合原子吸收光谱分析技术,该材料MWNTs/MIIPs可用于大米中的Cd2+快速分离富集检测.
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