Related Experiment Video
Updated: Jun 10, 2026
08:00
Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain
Published on: March 27, 2018
Pore-lattice deformations in ordered mesoporous matrices: experimental studies and theoretical analysis
Martin Schoen1, Oskar Paris, Gerrit Günther
1Stranski-Laboratorium für Physikalische und Theoretische Chemie, Fakultät für Mathematik und Naturwissenschaften, Technische Universität Berlin, Berlin, Germany. martin.schoen@tu-berlin.de
Physical Chemistry Chemical Physics : PCCP
|July 30, 2010
Summary
Mesoporous silica pores deform during fluid sorption, expanding and contracting based on adsorption stages. This discovery reveals fluid-solid interactions and enables material property estimation.
Area of Science:
- Materials Science
- Physical Chemistry
- Nanotechnology
Background:
- Mesoporous silica is widely used for fluid sorption and condensation.
- Materials are traditionally viewed as inert scaffolds in these processes.
Purpose of the Study:
- To investigate the physical phenomenon of fluid sorption in mesoporous silica.
- To explore the mechanical response of mesoporous silica to fluid adsorption.
Main Methods:
- In situ small-angle X-ray diffraction experiments were conducted.
- Monte Carlo simulations in a grand canonical ensemble were employed.
- Analysis of sorption isotherms and thermodynamic properties.
Main Results:
- Evidence of sorption-induced strain in mesoporous silica was observed.
- Pore expansion and contraction were detected during fluid adsorption and capillary condensation.
- Pore pressure and Young's modulus of the silica were estimated.
- Deformability of the solid significantly altered confined fluid phase behavior.
Conclusions:
- Mesoporous silica is not an inert scaffold but exhibits mechanical deformation during fluid sorption.
- The study provides a method to estimate material properties and understand confined fluid behavior.
- Findings have implications for applications involving fluid-solid interactions in porous materials.
