| Summary: | 碩士 === 國立中央大學 === 化學研究所 === 99 === This thesis is divided into three parts. Part one, rapid synthesis route to synthesize ordered mesoporous benzene-silicas in a short time developed by using ultrasonic irradiation. This synthesis route effectively reduces the total synthesis time from days to a few hours, which is much shorter than the conventional synthesis methods. The phenylene-bridged mesoporous materials exhibited a hexagonally ordered mesostructure with high surface area over 700 m2/g, pore volume over 0.6 cm3/g and large pore diameter in the range of 4.3–5.2 nm.
In part two, well-ordered hexagonal mesoporous silica SBA-15 functionalized with phenylene and thiol bifunctional groups have been synthesized via co-condensation of 1,4-bis(triethoxysilyl)benzene (BTEB) and 3-Mercaptopropyltrimethoxysilane (MPTMS) under acidic condition. The materials were characterized by a variety of techniques including power X-ray diffraction (XRD), nitrogen sorption measurements, 13C solid-state NMR spectroscopy, and thermogravimetric analysis (TGA).
In part three, well-ordered hexagonal mesoporous silica SBA-15 functionalized with disulfide functional groups have been synthesized via co-condensation of tetraethyl orthosilicate (TEOS) and bis[3-(triethoxysilyl)propyl] disulfide (BTSPDS) templated by P123 under acid condition. Moreover, we synthesized a series of SBA-15 samples with thio functional group via co-condensation of TEOS and MPTMS, and used 48% H2SO4 to remove the template and also oxidized thio groups to disulfide groups. We compared these two series of samples and used those samples to adsorb Hg2+ metal ion.
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