中空介孔磁性Fe_(3)O_(4)@HMPDA微粒的制备及其对水中抗生素的分离性能  

Preparation and Properties Study of Hollow Mesoporous Fe_(3)O_(4)@HMPDA Microparticles and Their Separation Performance for Antibiotics in Water

作　　者：蔺兰兰 李海洋 赵学瑞 陶彩虹[1] LIN Lan-lan;LI Hai-yang;ZHAO Xue-rui;TAO Cai-hong(School of Chemistry and Chemical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China)

机构地区：[1]兰州交通大学化学化工学院,兰州730070

出　　处：《兰州交通大学学报》2021年第5期112-120,共9页Journal of Lanzhou Jiaotong University

基　　金：甘肃省自然科学基金(18JR3RA109);兰州交通大学百名优秀人才培养计划(教学型)。

摘　　要：制备了一种具有较大的比表面积、孔容积和良好吸附性能的中空介孔磁性Fe_(3)O_(4)@HMPDA亚微米粒子.通过TEM、XRD、XPS、等一系列表征手段研究了粒子的成分和形貌.较大的空腔结构,使其具有较好的吸附能力.结果表明:Fe_(3)O_(4)@HMPDA粒子对DOX和TCH的最大平衡吸附量分别123.634 mg/g和150.809 mg/g,DOX和TCH分别在8 h时和12 h时达到吸附平衡,且均符合Langmuir模型和准二级动力学吸附.经6次循环使用后,其去除率依然在40%以上,说明该粒子具有良好的循环利用性能.In this study,a type of hollowmesoporous magnetic submicronparticles Fe_(3)O_(4)@HMPDA with good adsorption function were prepared,which had a large specific surface area and total pore volumes.A series of characterization methods including TEM,XRD and XPS were used to research the component and morphology of the particles.Due to the larger cavity structure,it had a larger adsorption capacity.The results showed that the maximum equilibrium adsorption capacity of Fe_(3)O_(4)@HMPDA for TCH and DOX was 123.634 mg/g and 150.809 mg/g,respectively.DOX and TCH reached adsorption equilibrium at 8 h and 12 h,respectively,which were in accordance with Langmuir model and quasi-first order kinetic adsorption.DOX and TCH reached adsorption equilibrium at 8 h and 12 h,respectively,and the fitting of the magnetic adsorbent to the two antibiotics conforms to the Langmuir model and quasi-first order kinetic adsorption.And the composite material was relatively stable,after 6 cycles,the removal rate was still above 40%,which indicate that the particle has a good regeneration performance.

关 键 词：磁性吸附剂 多巴胺 中空介孔材料 抗生素 

分 类 号：O61[理学—无机化学]