Mesopore uniformity and hydrothermal stability of silica thin films for high permeabilty applications
EMSL Project ID
11695
Abstract
Thin film OMSs were prepared using several organic templates that provide a range of ordering in the films. Results indicate that ordered mesoporous domains within the film promote uniformly thicker pore walls that increase hydrothermal stability by reducing the number of ?weakest links,? while the orientational disorder of those domains simultaneously promotes the high permeabilities needed for thin film sensor applications. A quantitative mechanical model is used to describe the dependence of the mechanical stability on the pore size and wall thickness, and its relationship to hydrothermal stability is discussed.
Project Details
Project type
Exploratory Research
Start Date
2004-10-28
End Date
2006-04-18
Status
Closed
Released Data Link
Team
Principal Investigator
Related Publications
Williford RE, XS Li, RS Addleman, GE Fryxell, S Baskaran, JC Birnbaum, CA Coyle, TS Zemanian, CM Wang, and AR Courtney. 2005. "Mechanical Stability of Templated Mesoporous Silica Thin Films." Microporous and Mesoporous Materials 85(3):260-266.