| 多面体倍半硅氧烷制备有序介孔氧化硅材料 |
| Preparation of Ordered Mesoporous Silica from Polyhedral Oligomeric Silsesquioxane |
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| 摘要: |
| 关键词: 多面体倍半硅氧烷 有序介孔氧化硅 自组装 |
| 基金项目: |
| Abstract: Octa(tetramethylammonium)-polyhedral oligomeric silsesquioxane(TMA-POSS) with cage-like structure was synthesized, the structure was characterized by NMR, FTIR and Elemental analyses. The mesoporous silica was prepared under alkaline condition using TMA-POSS as the silicon source and hexadecyltrimethylammonium bromide (CTAB) as the template, the structures of these products were characterized by XRD, TEM and nitrogen adsorption and desorption methods. The results indicate that the synthesized silica exhibites a well-ordered hexagonal pore structure with larger specific surface area. With increasing of CTAB molar ratio, the spacing of the crystal plane d100 is increased. The effects of the pH values on the mesoporous structure in the reaction system with different molar ratio of nPOSS/nCTAB were investigated. The synthesis mechanism of mesoporous silica was also discussed. |
| Keywords: polyhedral oligomeric silsesquioxane ordered mesoporous silica self-assembly |
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| 赵春宝,杨绪杰,汪信,陆路德.多面体倍半硅氧烷制备有序介孔氧化硅材料[J].无机化学学报,2007,23(3):545-549. |
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