Abstract.
The unique structure of a set of self-assembled porous silica materials was characterized through a combined small-angle scattering (CSAS) method using small- and ultra-small angle neutron scattering as well as small-angle X-ray scattering. The porous silica specimens investigated were prepared by a sol-gel method under the presence of alkylketene dimer (AKD) template particles and through calcination, which leads to the development of porous silica having a mass-fractal structure over length scales from ~ 100 nm to ~ 10 μm. Furthermore, the specimens posses a hierarchical structure, which consist of a fractal porous structure, and also contain primary silica particles less than 10 nm in size, which form a continuous silica matrix. To characterize these complex structures, observation over a broad range of length scales is indispensable. We propose a CSAS technique that serves this purpose well.
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Yamaguchi, D., Mayama, H., Koizumi, S. et al. Investigation of self-assembled fractal porous-silica over a wide range of length scales using a combined small-angle scattering method. Eur. Phys. J. B 63, 153–163 (2008). https://doi.org/10.1140/epjb/e2008-00223-9
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DOI: https://doi.org/10.1140/epjb/e2008-00223-9