| 温度对介孔二氧化硅形貌和介相结构有序性的影响 |
| Effect of Temperature on the Morphologies and the Mesostructure Ordering of Mesoporous Silica |
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| 摘要: |
| 关键词: 介孔二氧化硅 形貌控制 柱体 |
| 基金项目: |
| Abstract: Silica particles with rod-like and top-like morphologies have been controllably synthesized with a basic medium. The characteristics of the mesoporous silica particles were characterized by X-ray diffraction (XRD), nitrogen sorption, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and high resolution transmission electron microscopy (HRTEM). The results indicate that temperature affects the macrostructures and mesostructure ordering of mesoporous silica. At lower temperature highly ordered mesoporous silica with hexastyle and top structure could be obtained under different alkalinity. As the temperature increases, mesoporous silica transforms to a rod-like shape and the aspect ratio of length/diameter decreases with the decrease of the order of mesostructure. When the temperature is high enough, spherical particles could be prepared and there are still defects existing in mesostructure. |
| Keywords: mesoporous silica morphological control rods |
| 投稿时间：2004-07-12 修订日期：2004-10-10 |
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| 庞雪蕾,任俊,唐芳琼.温度对介孔二氧化硅形貌和介相结构有序性的影响[J].无机化学学报,2005,21(2):281-285. |
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