Preferred alignment of mesochannels in a mesoporous silica film grown on a silicon (110) surface

Hirokatsu Miyata, Kazuyuki Kuroda

Research output: Contribution to journalArticlepeer-review

117 Citations (Scopus)

Abstract

It has been proved that surfactant-silicate supramolecular architecture formed on a silicon substrate is strongly affected by the crystal orientation of a silicon wafer, indicating the variation of the interactions between the surfactants and the silicon surfaces. The hexagonal mesoporous silica film with aligned mesochannels was grown on a (110) wafer, whereas the mesochannels were not aligned in the films grown on (100) and (111) wafers. The alignment direction of the mesochannels on the (110) wafer is parallel to the [001] direction. The Gaussian distribution of the alignment direction with a full width at half-maximum (fwhm) of 29°was shown by in-plane X-ray diffraction. The hexagonal packing of the mesochannels in the film is distorted. The strong anisotropy of the atomic arrangement of silicon on the (110) surface causes the preferential alignment of mesochannels.

Original languageEnglish
Pages (from-to)7618-7624
Number of pages7
JournalJournal of the American Chemical Society
Volume121
Issue number33
DOIs
Publication statusPublished - 1999 Aug 25

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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