以2,4,6-三硝基甲苯(TNT)为模板分子、氨丙基三乙氧基硅烷为功能单体、正硅酸乙酯为交联剂,采用溶胶凝胶法成功制备了对TNT具有特异选择识别功能的磁性分子印迹聚合物.合成制备的磁性分子印迹聚合物具有良好的磁响应性,在外加磁场下可实现快速分离.红外光谱(FT-IR)、X射线光电子能谱和扫描电镜结果证实聚合物为核壳结构,磁性粒子由硅烷偶联剂完全包覆,并在其表面形成了一层分子印记聚合物;静态吸附实验结果表明,制备的磁性分子印迹聚合物对模板分子TNT具有良好的吸附能力,其饱和吸附量为77mmol/kg;通过以3,4-二硝基甲苯(DNT),为结构相似物的吸附选择性实验,磁性印迹聚合物对模板分子表现出良好的特异选择性.
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