磁性UiO-66复合材料的合成及其对水体中硝基酚有机分子的吸附性能
Synthesis of Magnetic UiO-66 Composites for the Adsorption of Nitro Phenol Organic Molecules in Water
作者单位E-mail
杨清香 郑州轻工业学院材料与化学工程学院, 郑州 450002  
任爽爽 郑州轻工业学院材料与化学工程学院, 郑州 450002  
赵倩倩 郑州轻工业学院材料与化学工程学院, 郑州 450002  
陈志军 郑州轻工业学院材料与化学工程学院, 郑州 450002 chenzj@zzuli.edu.cn 
摘要: 以溶剂热法制备了Fe3O4@SiO2-PSS@UiO-66结构的磁性多孔复合材料,并利用XRD,TEM,SEM,IR,TG,VSM和N2吸附-脱附对样品的结构和形貌进行测试表征。研究结果表明:磁性UiO-66复合材料是以球型Fe3O4为核,MOF为壳的核-壳结构,其表面的MOF层由多个立方多晶堆积组装而成,且具有良好的超顺磁性。进一步研究了Fe3O4@SiO2-PSS@UiO-66对2-硝基-1,3-苯二酚的吸附性能。探讨了吸附时间,吸附量和2-硝基-1,3-苯二酚初始浓度在吸附过程中的影响,结果表明:当吸附时间为12 h,吸附剂的用量为5 mg,2-硝基-1,3-苯二酚浓度为400 mg·L-1时,最大吸附量为161.36 mg·g-1。另外,磁性UiO-66复合材料对2-硝基-1,3-苯二酚高的吸附性能可能是由于UiO-66与2-硝基-1,3-苯二酚之间的静电作用以及二者之间苯环的π-π作用。
关键词: 磁性UiO-66复合材料  2-硝基-1,3-苯二酚  吸附性能  静电引力  π-π作用
基金项目: 国家自然科学基金(No.21401170,20976168,21271160)和郑州轻工业学院博士基金(No.2013BSJJ021)资助项目。
Abstract: Magnetic porous composites of Fe3O4@SiO2-PSS@UiO-66 were prepared by hydrothermal method. The microstructure and morphology was characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscope (SEM), infrared (IR), thermogravimetric analysis (TG), vibrating sample magnetometer (VSM) and N2 adsorption-desorption. The results show that magnetic UiO-66 composites are a core shell structure with spherical Fe3O4 as core and cubic MOF as shell. The composites show good superparamagnetism. The adsorption performance of 2-nitroresorcinolon Fe3O4@SiO2-PSS@UiO-66 was further studied. And the effects of contact time, adsorbent dose and initial 2-nitroresorcinol concentration on the adsorption process were explored. The results show that the maximum adsorption capacity is 161.36 mg·g-1 in following experimental conditions:contact time is 120 min, adsorbent dose is 5 mg, initial 2-nitroresorcinol concentration is 400 mg·L-1. In addition, the higher adsorption efficiency of 2-nitroresorcinol on magnetic UiO-66 composites may be due to the electrostatic interaction and π-π interaction of phenyl ring between UiO-66 and 2-nitroresorcinol.
Keywords: magnetic UiO-66 composites  2-nitroresorcinol  adsorption performance  electrostatic attraction  π-π interaction
投稿时间:2016-12-05 最后修改时间:2017-03-28
摘要点击次数:  109
全文下载次数:  115
杨清香,任爽爽,赵倩倩,陈志军.磁性UiO-66复合材料的合成及其对水体中硝基酚有机分子的吸附性能[J].无机化学学报,2017,33(5):843-852.
查看全文  查看/发表评论  下载PDF阅读器
Support information: