搅拌速度对介孔二氧化硅形貌的影响

Impact of Stirring Rates on the Morphology of Mesoporous Silica

  • 摘要: 本文利用阴离子模板法第一次制得杆状形貌的介孔二氧化硅材料。搅拌速度影响无机硅源的聚合速度及表面活性剂分子、助结构导向剂分子及无机硅源的自组装,从而影响所得样品的形貌。在200 rpm和1000 rpm下分别制得杆状(或手性棒状)和球形的介孔二氧化硅材料。并通过透射电子显微镜(TEM)对其形貌进行了表征。

     

    Abstract: In this paper, mesoporous silica with rod-shaped morphology was fabricated by a template method. The stirring rate affect the condensation rate of silicate precursors and self-assembly of chiral anionic surfactants, costructure-directing agent and inorganic silicate precursors. Thus affect the morphology of mesoporous silica. The rod-shaped (or chiral rod) and spherical mesoporous silica were abtained at the stirring rate 200rpm and 1000rpm. The samples were characterized by transmission electron microscopy (TEM).

     

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