HRTEM imaging of mesoporous phase transition from hexagonal P6mm to cubic Ia (-)3d symmetry

A E Garcia-Bennett, R P Hodgkins, T Sen, M W Anderson, P A Wright

Research output: Book/ReportBook

2 Citations (Scopus)

Abstract

The Successful synthesis of large pore bicontinuous cubic mesoporous solid using the triblock co-polyme PEO-PPO-PEO (P123) as a template and 3-mercaptopropyltriethoxysilane (MPTS) and tetraethylorthosilicate (TEOS) as silica sources has been recently reported. We present here High Resolution, Transmission Electron Microscopy (HRTEM) imaging of samples of these and related mesoporous material prepared under aqueous and hydrothermal conditions. This provides evidence suggesting that the transition from the hexagonal to cubic bicontinuous structure is governed by the amount of MPTS added to the synthesis gel and the synthesis temperature, for conditions described. In addition we also investigate the formation of the bicontinuous cubic structure analogous to MCM-48 through the addition organosilane, phenyltriethoxysilane.

Original languageEnglish
PublisherUnknown Publisher
Number of pages8
Publication statusPublished - 2004

Keywords

  • ELECTRON-MICROSCOPY
  • MCM-48
  • SILICA
  • CRYSTALLOGRAPHY
  • CARBON
  • SPACES

Fingerprint

Dive into the research topics of 'HRTEM imaging of mesoporous phase transition from hexagonal P6mm to cubic Ia (-)3d symmetry'. Together they form a unique fingerprint.

Cite this