Two-dimensional crystals of mesoporous silica SBA-15 nanosheets with perpendicular and open channels

Yi Qi Yeh, Chih Yuan Tang, Chung Yuan Mou

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

A preparation of mesoporous silica SBA-15 thin sheets with perpendicular nanochannels (SBA(⊥)) and open ends is reported here. At a synthesis condition of pH = 2 where the silica condensation is extremely slow, micron-sized single-crystal-like hexagonally faceted nanosheets (SBA(⊥)-pH2) with aspect ratio of 10-50 were formed. The nanosheets can attach to each other in sideway to extend the thin sheet. At pH = 5, multi-domain SBA(⊥)-pH5 nanosheets are formed, and stacking attachment of sheets is preferred. Vivid Moiré patterns are observed in large areas of stacked silica sheets, indicating excellent structure order.

Original languageEnglish
Article number113303
JournalAPL Materials
Volume2
Issue number11
DOIs
Publication statusPublished - Nov 1 2014
Externally publishedYes

ASJC Scopus subject areas

  • General Materials Science
  • General Engineering

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