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Investigation of self-assembled fractal porous-silica over a wide range of length scales using a combined small-angle scattering method

Author

Listed:
  • D. Yamaguchi
  • H. Mayama
  • S. Koizumi
  • K. Tsujii
  • T. Hashimoto

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. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2008

Suggested Citation

  • D. Yamaguchi & H. Mayama & S. Koizumi & K. Tsujii & T. Hashimoto, 2008. "Investigation of self-assembled fractal porous-silica over a wide range of length scales using a combined small-angle scattering method," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 63(2), pages 153-163, May.
    • Handle: RePEc:spr:eurphb:v:63:y:2008:i:2:p:153-163
    DOI: 10.1140/epjb/e2008-00223-9
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