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采用表面分子印迹和溶胶-凝胶技术,以对位红作为模板分子,离子液体作为辅助模板,二氧化硅微球为载体,制备对对位红具有高选择性的分子印迹硅球。红外分析表明,APTES已连接到活化硅球的表面并与对位红发生反应,生成印迹聚合物。通过静态吸附和竞争试验,对印迹聚合物硅球的选择吸附性能进行评价。结果表明:印迹聚合物对对位红的吸附容量为13.49mg/g,明显高于非印迹聚合物6.41mg/g,而印迹聚合物和非印迹聚合物对苏丹红I～IV号的吸附容量相差很小。对位红在印迹聚合物中的分配系数为145.0,明显高于其在非印迹聚合物中的分配系数59.8。本试验中制备的印迹聚合物具有良好的选择吸附性能。
Surface molecular imprinting and sol-gel techniques were used to fabricate molecularly imprinted silica spheres with high selectivity for para red by using para red as the template molecule, ionic liquid as the auxiliary template, and silica microspheres as the support. Infrared analysis shows that APTES has been attached to the surface of activated silica balls and reacts with para red to form imprinted polymers. The static adsorption and competition tests were carried out to evaluate the selective adsorption properties of imprinted polymer spheres. The results showed that the adsorption capacity of the imprinted polymer to para red was 13.49 mg / g, which was significantly higher than that of the non-imprinted polymer (6.41 mg / g). The adsorption capacity of imprinted polymer and non-imprinted polymer to Sudan Red I to IV A small difference. The partition coefficient of para-red in the imprinted polymer was 145.0, which was significantly higher than its partition coefficient of 59.8 in the non-imprinted polymer. The imprinted polymer prepared in this experiment has good selective adsorption properties.