【摘要】：近年來(lái),有機(jī)多孔材料因擁有良好的穩(wěn)定性、低密度、高比表面積等優(yōu)點(diǎn),引起研究人員的廣泛關(guān)注,其中具備良好晶形的共價(jià)有機(jī)骨架材料(Covalent Organic Frameworks) COFs已成為人們研究的重點(diǎn)。自Yaghi小組在2005年首次報(bào)道COFs材料以來(lái),該材料已研究應(yīng)用于不同領(lǐng)域(氣體的分離、多相催化、光電材料等)。但因有機(jī)多孔材料為粉末狀固體且密度低,使得該材料在應(yīng)用上受到了一定程度的限制。膜技術(shù)具有節(jié)能、高效、環(huán)保、兼容性強(qiáng)等優(yōu)點(diǎn),若將有機(jī)多孔材料制成膜或?qū)⑵涓街谳d體材料表面,將會(huì)使得有機(jī)多孔材料得到更廣泛的應(yīng)用。此外,孔道均一的功能型COFs材料的合成也是各研究人員關(guān)注的熱點(diǎn)。本論文主要包括以下四個(gè)方面：(1)綜合敘述了有機(jī)多孔聚合物材料目前的發(fā)展情況。重點(diǎn)闡述了COFs材料的不同合成方法、表征手段及其在各領(lǐng)域的應(yīng)用情況。(2)用微波法合成COF-5粉體,首次實(shí)現(xiàn)了COFs/載體(COF-5/a-Al2O3)材料的復(fù)合；探究了如何實(shí)現(xiàn)COFs膜的均一性。通過PXRD、紅外、掃描電鏡等表征方法對(duì)微波法合成的COF-5粉體和COF-5/a-Al2O3材料的結(jié)構(gòu)與性質(zhì)進(jìn)行了研究。充分證明已成功合成了COFs膜,且首次將COFs膜生長(zhǎng)于a-Al2O3陶瓷管表面。(3)采用一種無(wú)需模板和催化劑的方法一步合成了基于三聚氰胺與對(duì)苯二甲醛的有機(jī)多孔材料SNW-1,通過處理改性a-Al2O3管表面,得到了SNW-1/a-Al2O3材料。SEM結(jié)果顯示SNW-1膜致密、均勻。(4)通過溶劑熱合成法設(shè)計(jì)合成了功能型COF-Azo,將偶氮基團(tuán)成功引入到COFs骨架內(nèi)。通過粉末X-射線衍射、紅外、固體核磁、TG、氮?dú)馕摳降缺碚骷夹g(shù)對(duì)COF-Azo進(jìn)行了表征,結(jié)果顯示COF-Azo為層層平行重疊排列的2D晶體材料；化學(xué)穩(wěn)定性好,熱穩(wěn)定性高,比表面積高(1552 m2/g)。并且通過測(cè)試發(fā)現(xiàn)COF-Azo對(duì)H2的吸附能力強(qiáng),該材料可能成為很好的儲(chǔ)氫材料。
[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.
【學(xué)位授予單位】：齊魯工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TB383.4

【共引文獻(xiàn)】

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本文編號(hào)：2197112