锌有机骨架材料的合成及对水中Pb^(2+)的萃取性能研究  

Synthesis of Zinc Organic Frame Materials and Study on the Extraction Performance of Pb^(2+)in Water

作　　者：高子轩 伍康宇 Gao Zixuan;Wu Kangyu(School of Environmental and Materials Engineering,Yantai University,Yantai 264005,China)

机构地区：[1]烟台大学环境与材料工程学院,山东烟台264005

出　　处：《山东化工》2024年第7期47-49,53,共4页Shandong Chemical Industry

摘　　要：采用溶剂热法,利用5,11,17,23-四叔丁基-25,26,27,28-四羧基杯[4]芳烃、2,2′-联吡啶和六水合硝酸锌反应制备了一种锌的有机骨架材料(Zn-MOF),并对这种材料从溶液pH值、时间以及Pb^(2+)的初始浓度方面研究了其对Pb^(2+)萃取性能的影响。结果表明,在pH值为4~7范围内,Zn-MOF对Pb^(2+)的萃取效率均能达到99%。且能在20 min内对Pb^(2+)萃取达到平衡。随着Pb^(2+)初始浓度增大,Zn-MOF对Pb^(2+)的萃取容量增大,最大萃取量为243.57 mg·g^(-1)。同时,Zn-MOF对Pb^(2+)的萃取符合Langmuir等温模型和准二级动力学模型。A zinc organic frame material(Zn-MOF)was prepared by solvothermal reaction of 5,11,17,23-tetrabutyl-25,26,27,28-tetrabutyl-calypylidene[4]aromatics,2,2′-bipyridine and zinc nitrate hexahydrate.The effect of this material on the extraction performance of Pb^(2+)was studied in terms of pH value,time and initial concentration of Pb^(2+).The results show that the extraction efficiency of Zn-MOF for Pb^(2+)can reach 99%in the pH value range of 4~7.Pb^(2+)extraction can be balanced within 20 minutes.As the initial concentration of Pb^(2+)increases,the extraction capacity of Zn-MOF for Pb^(2+)increases,and the maximum extraction amount is 243.57 mg·g^(-1).Meanwhile,the extraction of Pb^(2+)by Zn-MOF is consistent with Langmuir isothermal model and quasi-second-order kinetic model.

关 键 词：锌有机骨架材料 萃取 Pb^(2+) 萃取动力学 萃取等温线 

分 类 号：O627.23[理学—有机化学]