Evolution of standing mesochannels on porous anodic alumina substrates with designed conical holes

Yusuke Yamauchi, Tomota Nagaura, Ayako Ishikawa, Toyohiro Chikyow, Satoru Inoue

研究成果: Article査読

129 被引用数 (Scopus)

抄録

We report the formation of standing mesochannels simply by spin-coating a precursor solution onto a PAA (porous anodic alumina) substrate with designed conical holes, utilizing exactly the same precursors and reaction conditions that form two-dimensional (2D) hexagonal mesoporous SBA-15-type films. When the aspect ratios of the conical holes are lower, the sponge-like mesopores are generated within the conical holes. Such a formation of sponge-like mesostructures truly acts as a trigger for the evolution of perpendicularly oriented and tilted mesochannels. On the other hand, when the PAA substrates with high-aspect cones are used, the mesochannels are stacked like a doughnut within the conical holes, which leads to parallel orientations of the mesochannels in the continuous film region.

本文言語English
ページ(範囲)10165-10170
ページ数6
ジャーナルJournal of the American Chemical Society
130
31
DOI
出版ステータスPublished - 2008 8 6
外部発表はい

ASJC Scopus subject areas

  • 触媒
  • 化学 (全般)
  • 生化学
  • コロイド化学および表面化学

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