Direct imaging of surface topology and pore system of ordered mesoporous silica (MCM-41, SBA-15, and KIT-6) and nanocast metal oxides by high resolution scanning electron microscopy.
Direct imaging of surface topology and pore system of ordered mesoporous silica (MCM-41, SBA-15, and KIT-6) and nanocast metal oxides by high resolution scanning electron microscopy.
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DOI：
10.1021/ja803362s
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发表时间：
2008-07
影响因子：
15
通讯作者：
H. Tüysüz;C. Lehmann;Hans‐Josef Bongard;B. Tesche;R. Schmidt;F. Schüth
中科院分区：
文献类型：
--
作者：
H. Tüysüz;C. Lehmann;Hans‐Josef Bongard;B. Tesche;R. Schmidt;F. Schüth
本文用高分辨扫描电子显微镜(HR-SEM)详细研究了有序介孔二氧化硅(SBA-15、MCM-41和KIT-6)和一系列纳米铸造Co3O4、Co3O4/CoFe2O4复合材料的表面拓扑结构。在孔径分辨率下获得了MCM-41结构的图像，以及KIT-6在两个不同老化温度下的回旋二氧化硅表面的真实空间图像，清楚地揭示了老化过程的差异。通过使用极高分辨率的低压HR-SEM技术，我们可以非常清楚地显示模板性质对纳米铸造金属氧化物结构的影响。
We report here a detailed study on the surface topology of well-known ordered mesoporous silica (SBA-15, MCM-41, and KIT-6) and a series of nanocast Co 3O 4, Co 3O 4/CoFe 2O 4 composites by high resolution scanning electron microscopy (HR-SEM). Images of the MCM-41 structure were obtained at a resolution of the pore size, as well as a real space image of the gyroid silica surface of KIT-6 for two different aging temperatures, clearly revealing the differences of the aging procedures. By using the low voltage HR-SEM technique with extremely high resolution, we could very clearly show the influence of the template properties on the structure of the nanocast metal oxides.