COFs膜与功能型COFs的合成及应用性能研究
发布时间：2018-08-22 12:33
【摘要】：近年来,有机多孔材料因拥有良好的稳定性、低密度、高比表面积等优点,引起研究人员的广泛关注,其中具备良好晶形的共价有机骨架材料(Covalent Organic Frameworks) COFs已成为人们研究的重点。自Yaghi小组在2005年首次报道COFs材料以来,该材料已研究应用于不同领域(气体的分离、多相催化、光电材料等)。但因有机多孔材料为粉末状固体且密度低,使得该材料在应用上受到了一定程度的限制。膜技术具有节能、高效、环保、兼容性强等优点,若将有机多孔材料制成膜或将其附着在载体材料表面,将会使得有机多孔材料得到更广泛的应用。此外,孔道均一的功能型COFs材料的合成也是各研究人员关注的热点。本论文主要包括以下四个方面：(1)综合叙述了有机多孔聚合物材料目前的发展情况。重点阐述了COFs材料的不同合成方法、表征手段及其在各领域的应用情况。(2)用微波法合成COF-5粉体,首次实现了COFs/载体(COF-5/a-Al2O3)材料的复合；探究了如何实现COFs膜的均一性。通过PXRD、红外、扫描电镜等表征方法对微波法合成的COF-5粉体和COF-5/a-Al2O3材料的结构与性质进行了研究。充分证明已成功合成了COFs膜,且首次将COFs膜生长于a-Al2O3陶瓷管表面。(3)采用一种无需模板和催化剂的方法一步合成了基于三聚氰胺与对苯二甲醛的有机多孔材料SNW-1,通过处理改性a-Al2O3管表面,得到了SNW-1/a-Al2O3材料。SEM结果显示SNW-1膜致密、均匀。(4)通过溶剂热合成法设计合成了功能型COF-Azo,将偶氮基团成功引入到COFs骨架内。通过粉末X-射线衍射、红外、固体核磁、TG、氮气吸脱附等表征技术对COF-Azo进行了表征,结果显示COF-Azo为层层平行重叠排列的2D晶体材料；化学稳定性好,热稳定性高,比表面积高(1552 m2/g)。并且通过测试发现COF-Azo对H2的吸附能力强,该材料可能成为很好的储氢材料。
[Abstract]:In recent years, organic porous materials have attracted much attention due to their good stability, low density and high specific surface area. Among them, covalent organic frameworks (COFs) with good crystalline form have become the focus of research. Since the first report of COFs by Yaghi's team in 2005, COFs have attracted much attention. Materials have been studied and applied in different fields (gas separation, heterogeneous catalysis, optoelectronic materials, etc.). However, the application of organic porous materials is limited to a certain extent due to their powder-like solids and low density. Membrane technology has the advantages of energy-saving, high efficiency, environmental protection and strong compatibility. If organic porous materials are made into membranes or attached to them. In addition, the synthesis of functionalized COFs with uniform pore size is also a hot topic for researchers. This paper mainly includes the following four aspects: (1) The current development of organic porous polymer materials is summarized. The emphasis is put on the COFs materials. (2) COF-5 powder and COF-5/a-Al2O3 powder were synthesized by microwave irradiation for the first time, and the homogeneity of COFs film was investigated. The structure and properties of the material were studied. The COFs film was successfully synthesized and grown on the surface of a-Al2O3 ceramic tube for the first time. (3) An organic porous material SNW-1 based on melamine and terephthalaldehyde was synthesized by one step without template and catalyst. The surface of a-Al2O3 tube was modified by treatment. The results of SEM showed that the SNW-1 film was dense and uniform. (4) The functional COF-Azo was synthesized by solvothermal synthesis and the azo group was successfully introduced into the framework of COFs. The COF-Azo was characterized by powder X-ray diffraction, infrared spectroscopy, solid-state nuclear magnetic resonance, TG and nitrogen adsorption and desorption techniques. The results showed that the COF-Azo layer was flat. D crystal materials with overlapping rows have good chemical stability, high thermal stability and high specific surface area (1552 m2/g). It is found that COF-Azo can adsorb H2 strongly, and this material may be a good hydrogen storage material.
【学位授予单位】：齐鲁工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB383.4
[Abstract]:In recent years, organic porous materials have attracted much attention due to their good stability, low density and high specific surface area. Among them, covalent organic frameworks (COFs) with good crystalline form have become the focus of research. Since the first report of COFs by Yaghi's team in 2005, COFs have attracted much attention. Materials have been studied and applied in different fields (gas separation, heterogeneous catalysis, optoelectronic materials, etc.). However, the application of organic porous materials is limited to a certain extent due to their powder-like solids and low density. Membrane technology has the advantages of energy-saving, high efficiency, environmental protection and strong compatibility. If organic porous materials are made into membranes or attached to them. In addition, the synthesis of functionalized COFs with uniform pore size is also a hot topic for researchers. This paper mainly includes the following four aspects: (1) The current development of organic porous polymer materials is summarized. The emphasis is put on the COFs materials. (2) COF-5 powder and COF-5/a-Al2O3 powder were synthesized by microwave irradiation for the first time, and the homogeneity of COFs film was investigated. The structure and properties of the material were studied. The COFs film was successfully synthesized and grown on the surface of a-Al2O3 ceramic tube for the first time. (3) An organic porous material SNW-1 based on melamine and terephthalaldehyde was synthesized by one step without template and catalyst. The surface of a-Al2O3 tube was modified by treatment. The results of SEM showed that the SNW-1 film was dense and uniform. (4) The functional COF-Azo was synthesized by solvothermal synthesis and the azo group was successfully introduced into the framework of COFs. The COF-Azo was characterized by powder X-ray diffraction, infrared spectroscopy, solid-state nuclear magnetic resonance, TG and nitrogen adsorption and desorption techniques. The results showed that the COF-Azo layer was flat. D crystal materials with overlapping rows have good chemical stability, high thermal stability and high specific surface area (1552 m2/g). It is found that COF-Azo can adsorb H2 strongly, and this material may be a good hydrogen storage material.
【学位授予单位】：齐鲁工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB383.4
【共引文献】
相关期刊论文 前10条
1 Hua Cheng;Qiong-You Wu;Fan Han;Guang-Fu Yang;;Efficient synthesis of 4-substituted pyrazole via microwave-promoted Suzuki cross-coupling reaction[J];Chinese Chemical Letters;2014年05期
2 徐丽锋;贺丰华;王鹏;王宗德;范国荣;陈尚敇;;松香基季铵盐表面活性剂合成的研究进展[J];广东化工;2014年15期
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