基于柔性双吡啶配体MOFs材料的设计合成与性能研究
发布时间:2017-12-31 14:18
本文关键词:基于柔性双吡啶配体MOFs材料的设计合成与性能研究 出处:《郑州大学》2017年硕士论文 论文类型:学位论文
【摘要】:多孔材料在催化、发光、磁学性质、传感、分子识别、气体的存储、选择性吸附、分离等不同领域具有潜在的应用前景。在过去的20年里,金属 有机骨架(MOFs)材料因具有孔道尺寸可控、表面易功能化、高的比表面积、稳定的骨架结构等特点而引起人们的广泛关注。随着经济社会发展和人们对环境污染治理问题的重视,寻找无毒无害的吸附材料越来越成为科研工作者一个研究焦点。利用MOFs的多孔性、比表面积大、骨架稳定等特点处理染料废水也自然成为一个重要的研究课题。本论文选用合成的具有偶氮、羧酸的配体L1(吡啶-4-甲基-3-((4-(吡啶-4-甲氧基)苯基)偶氮)苯甲酸酯)和L2(吡啶-4-甲基-4-((4-(吡啶-4-甲氧基)苯基)偶氮)苯甲酸酯),以Zn(Ⅱ)为金属中心离子,采用溶剂热的合成方法,制备出了九种新的配合物,分别为[Zn2L12(5-OH-BDC)2(H2O)1.5]n(1)(5-OH-H2BDC=5-羟基间苯二甲酸)、[ZnL1(5-CH3-BDC)]n(2)(5-CH3-H2BDC=5-甲基间苯二甲酸)、[ZnL1(5-NO2-BDC)]n(3)、[ZnL1(5-NO2-BDC)(H2O)]n(4)、[ZnL1(5-NO2-BDC)]n(5)(5-NO2-H2BDC=5-硝基间苯二甲酸)、[ZnL1(BDC)]n(6)(H2BDC=间苯二甲酸)、[ZnL2(5-CH3-BDC)]n(7)、[ZnL2(5-CH3-BDC)]n(8)、[ZnL2(5-BDC)]n(9)等九种新的金属 有机骨架(MOFs)配合物。通过单晶衍射、X-射线粉末衍射(XRD)、红外(IR)、热重(TG)等手段对其进行表征。着重研究配合物[Zn2L12(5-OH-BDC)2(H2O)1.5]n(1)对刚果红、酸性黑10B、直接红80、甲基橙、橙黄Ⅱ等阴离子染料选择性吸附。
[Abstract]:Porous materials have potential applications in different fields, such as catalysis, luminescence, magnetic properties, sensing, molecular recognition, gas storage, selective adsorption, separation and so on. Due to its controllable pore size, easy surface functionalization and high specific surface area, the metal / organic skeleton / MOFs material has high specific surface area. With the development of economy and society, people pay more attention to the problem of environmental pollution treatment. The search for non-toxic and harmless adsorption materials has become a research focus of researchers. Using the porous properties of MOFs, the specific surface area is large. The treatment of dye wastewater with skeleton stability has naturally become an important research topic. In this paper, the synthetic azo has been selected. Ligands of carboxylic acids L _ 1 (pyridine-4-methyl-3-triphenyl) (pyridin-4-methoxy) phenyl) benzoate and L _ 2 (pyridine -4-methyl-4-pyridyl). Pyridine-4-methoxy) phenyl) azo) benzoate). Using Zn (鈪,
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