铁离子印迹材料IIP-PMAA/SiO_2的制备及吸附性能研究  

Preparation and adsorption properties of IIP-PMAA/SiO_2 iron ion imprinted material

作　　者：胡聪 刘越盟 胡潇雨 孟勇[1,2] HU Cong;LIU Yuemeng;HU Xiaoyu;MENG Yong(College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China;National and Local Joint Engineering Laboratory of New Petrochemical Materials and Resource Fine-Utilizing, Changsha 410081, China)

机构地区：[1]湖南师范大学化学化工学院,长沙410081 [2]石化新材料与资源精细利用国家地方联合工程实验室,长沙410081

出　　处：《功能材料》2018年第3期3087-3091,共5页Journal of Functional Materials

摘　　要：利用表面接枝印迹法,以硅胶为载体,甲基丙烯酸为配体,乙二醇二甲基丙烯酸酯为交联剂,成功制备了Fe^(3+)表面印迹材料IIP-PMAA/SiO_2,考察了IIP-PMAA/SiO_2对Fe^(3+)的吸附性能和选择识别能力。实验结果表明,该印迹材料的饱和吸附量为26.80mg/g,最佳吸附pH值为2,吸附平衡时间为2h,对Fe^(3+)离子具有很强的识别能力;同时材料的再生吸附性能也很稳定,重复使用10次吸附性能依然稳定。A Fe3+imprinted silica material IIP-PMAA/SiO2by surface grafting blotting,using silica gel as carrier,methacrylic acid as ligand,two glycol methyl acrylate as cross-linking agent.The adsorption properties and selective recognition ability on Fe3+of the imprinted polymer were studied by equilibrium-adsorption method.The experimental data showed that the maximum static adsorption capacity of the imprinted sorbent was26.80mg/g.The sorption equilibrium time was2h and the optimum pH for quantitative ferric iron retention was2.0.The relatively selective factor(k′)of Fe3+to other metal ions was greater than1.At the same time,the regenerative adsorption properties of the materials were also stable,and the performance was still stable after repeated use of ten times.The IIP could be repeatedly used with high selectivity and stability for Fe(Ⅲ).

关 键 词：离子表面印迹 甲基丙烯酸 铁(Ⅲ) 硅胶 

分 类 号：O647.33[理学—物理化学] X131.2[理学—化学]