Organosilica Monoliths with Multiscale Porosity: Detailed Investigation of the Influence of the Surfactant on Structure Formation

Author(s)

Manuel Weinberger, Thomas Fröschl, Stephan Puchegger, Herwig Peterlik, Nicola Hüsing

Abstract

Monolithic inorganic-organic hybrid materials have been synthesized via sol-gel processing of an ethylene glycol-modified ethane-bridged silane precursor in aqueous solution of the non-ionic block copolymer Pluronic™ P123. The influence of different sol compositions on the final gel structure was investigated in detail. The resulting materials consist of macroporous networks comprising periodically arranged mesopores, where the macropore size as well as the morphology of the material can be deliberately tailored by reducing the amount of the block copolymer template. The structure was investigated by small-angle X-ray scattering as well as scanning and transmission electron microscopy. Information on the porosity, surface area and pore size distribution were obtained from BET/BJH analysis and mercury intrusion measurements. For a more detailed insight into mechanism and kinetics of the mesostructure formation, in-situ SAXS experiments were carried out.

Organisation(s)

Dynamics of Condensed Systems

External organisation(s)

Universität Ulm

Journal

Silicon

Volume

1

Pages

19-28

No. of pages

10

ISSN

1876-990X

DOI

https://doi.org/10.1007/s12633-009-9005-3

Publication date

2009

Peer reviewed

Yes

Austrian Fields of Science 2012

1030 Physics, Astronomy, 103009 Solid state physics, 210006 Nanotechnology

Portal url

https://ucrisportal.univie.ac.at/en/publications/0a771992-4ab0-4408-a648-a01f0146bc0d