磁性硅基介孔材料对水中微囊藻毒素的吸附研究  

Research on Preparation of Mesoporous Magnetic Silicon-based Composites for Microcystin-LR Adsorption

作　　者：陈秀梅 CHEN Xiu-mei(Jiangsu Nantong Environmental Monitoring Center,Nantong,Jiangsu 226000,China)

机构地区：[1]江苏省南通环境监测中心,江苏南通226000

出　　处：《环境监测管理与技术》2021年第1期57-60,共4页The Administration and Technique of Environmental Monitoring

基　　金：江苏省环境监测科研基金资助项目(1919);南通市科技局基金资助项目(MS12015014)。

摘　　要：采用水热合成法可控合成了磁性Fe 3O 4@SiO 2和Fe 3O 4@SiO 2@Cu^2+球状核壳介孔材料,研究了模板剂的种类及去除方式对形貌的影响,并将材料用作固相萃取剂选择性吸附水中微囊藻毒素,结合高效液相色谱定量分析来研究其对MC-LR的吸附性能。实验表明,十六烷基三甲基溴化铵(CTAB)模板剂更有利于壳层的形成,3次乙醇振荡萃取的方式对于两种材料均可达到很好的模板剂去除效果,对MC-LR的吸附率分别达到85%和95%以上,而马弗炉煅烧方式则适用于Fe 3O 4@SiO 2@Cu^2+介孔材料的制备。太湖水样中MC-LR的去除实验表明,两种材料能够很好地应用于实际水样处理。Mesoporous magnetic particles(MMPs)of Fe 3O 4@mSiO 2 and Fe 3O 4@mSiO 2@Cu^2+were prepared by hydrothermal method.The effects of the types of template and the removal methods on morphology were studied.The materials were used as solid-phase extraction agents for selective adsorption of microcystin-LR(MC-LR)in water,the adsorption performances were studied through quantitative analysis by HPLC.The experimental results showed that CTAB template was more conducive to the formation of the shell.The extraction by using ethanol to oscillate for three times achieved good template removal effect for both materials,and the adsorption rates of MC-LR were more than 85%and 95%,respectively.Muffle furnace calcination method was suitable for the preparation of Fe 3O 4@mSiO 2@Cu^2+mesoporous materials.The experiments of MC-LR removal in water samples from Taihu Lake showed that these two materials could be well applied to practical sample treatment.

关 键 词：磁性硅基介孔材料 微囊藻毒素 吸附 制备方法 水处理 

分 类 号：TB383.1[一般工业技术—材料科学与工程] X703[环境科学与工程—环境工程]