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Synthesis and functionalization of the Ordered macroporous poly Alcohol assembled and ordered mesoporous carbon materials

Author: DiZuoZuo
Tutor: ZhaoDongYuan
School: Fudan University
Course: Inorganic Chemistry
Keywords: Mesoporous Carbon Hard template Mesoporous Silica Self-assembly Polyfurfuryl alcohol Magnetic materials Soft template Composites
CLC: O631.3
Type: PhD thesis
Year: 2009
Downloads: 900
Quote: 2
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Abstract


The diversity of the composition and structure of mesoporous materials and the resulting electromagnetic, optical, catalytic properties, and promising applications in the field of solid catalysis, photocatalysis, photochromic materials, electrode materials, attention has been widespread concern . However, so far ordered mesoporous organic polymer materials reported less developed ordered mesoporous polymer materials preparation, not only the rich mesoporous materials composed of polymer nanomaterials practical applications has important significance. The mesoporous carbon material having a large specific surface area and pore volume, chemical inertness, good mechanical stability and other characteristics, and thus is an excellent adsorbent of the separating agent, and the catalyst carrier. \Modification of mesoporous carbon out of the needs of the application, is increasingly becoming a hotspot. Mesoporous carbon prepared function modified for the \The thesis is divided into three parts: the first part, we use different hydrocarbons as the carbon source, using the hard template synthesis of a series of mesoporous carbon, different carbon sources mesoporous carbon skeleton as well as ultra-polar capacitor performance; second part, we try to synthetic poly furfuryl alcohol has ordered mesoscopic structures investigated its adsorption capacity of the organic molecules toluene; Part III, we have chosen to The non-ionic surface active agent is the soft template mesoporous carbon study object, through the control of the synthetic process, to achieve the modification of the function of the mesoporous carbon material with a view to the development of mesoporous carbon in the different fields of application. In the second chapter, the mesoporous silica SBA-15 as hard template, sucrose, furfuryl alcohol, naphthalene and anthracene as a carbon source, synthetic four mesoporous carbon. Wherein sucrose and furfuryl alcohol obtained mesoporous carbon having a wall structure of amorphous, high specific surface area, and contains a certain amount of the functional group; the anthracene obtained mesoporous carbon has a graphite wall structure. Used as an electric double layer capacitor, sucrose and furfuryl alcohol as prepared by the carbon source in the low carbonization temperature mesoporous carbon shows the highest capacity, as the carbonization temperature increases, the reduction of the electro-active functional groups, its capacitance value gradually decreases; obtained mesoporous carbon prepared by anthracene as the carbonization temperature increases, the improvement of the degree of graphitization of the carbon skeleton, the capacitance value gradually increased. In Chapter III, the organic silane crosslinking agent, tetraethyl orthosilicate as the inorganic precursor, furfuryl alcohol as organic precursors, polyhydric assembled Synthesis mesoscopic ordered poly furfuryl alcohol, a silicon oxide composite material, the material has a high specific surface area (500m 2 / g), a large pore volume (0.54cm 3 / g), and the large pore size (5.7 nm), wherein the organic polymer the mass ratio in the composite material can be as high as 60%. The material in toluene adsorption performance superior performance than the mesoporous silica material as the adsorption of organic molecules is expected. In the fourth chapter, we have developed a one-step synthesis of ordered mesoporous magnetic particle / carbon composite method. Resol resin and ferric citrate as the carbon source and a precursor of the magnetic particles, and F127 of the triblock nonionic surface active agent for the structure-directing agent used EISA method to achieve the self-assembly of the three components, the high-temperature calcination carbonized obtained after Ordered mesoporous γ-Fe 2 O 3 / carbon composites. Further washed with H 2 O 2 oxidation treatment, an increase of the hydrophilicity of the material. We investigated samples on the adsorption properties of the dye molecules in the aqueous solution of basic fuchsin, the results show the sample obtained showed very good adsorption performance, and the separation from the solution due to the presence of the magnetic particles, and the material becomes easy. Considered in the fifth chapter to large pore size and a high specific surface area of ??the mesoporous carbon adsorption of the dye molecules can be further improved, we in the resol resin, nickel nitrate, the system of the non-ionic surface active agent F127, and joined TEOS, using the the EISA method of multi-component self-assembly, after the high temperature carbonization with NaOH to remove the silica part, has been ordered mesoporous Ni / carbon composites. The pore size of the material 6.8nm, pore volume of 1.42cm 3 / g, than the surface area of ??1580 m 2 / g, its application in basic fuchsin dye molecules adsorption, the adsorption amount is more than 3 times the FDU-15 material, while separation process is simple.

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CLC: > Mathematical sciences and chemical > Chemistry > Polymer chemistry ( polymer ) > Polymer physics and physical chemistry of polymers > The chemical nature of polymers
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