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Crossed-discs of mesoporous silica SBA-15 and their carbon replicas

机译:介孔二氧化硅SBA-15的交叉盘及其碳复制品

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摘要

Crossed-discs of mesoporous silica SBA-15 were synthesized by using tetramethylorthosilicate (TMOS) as silica source in the presence of Sn2+ cations. The silica crossed-discs were characterized by small-angle X-ray scattering (SAXS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and nitrogen adsorption. All the results show that the materials have hexagonally ordered channels running parallel to the thickness of the discs. The effects of the reaction conditions on the morphology of the materials were discussed. The SBA-15 crossed-discs were used as hard templatesto obtain their carbon replicas.
机译:以四甲基原硅酸盐(TMOS)为二氧化硅源,在Sn 2 + 阳离子的存在下,合成了介孔二氧化硅SBA-15的交叉盘。二氧化硅交叉盘的特征在于小角度X射线散射(SAXS),扫描电子显微镜(SEM),透射电子显微镜(TEM)和氮吸附。所有结果表明,这些材料具有与圆盘厚度平行的六边形有序通道。讨论了反应条件对材料形态的影响。将SBA-15交叉圆盘用作硬模板,以获得其碳复制品。

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