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Controlling nanoparticle template morphology: effect of solvent chemistry

Published online by Cambridge University Press:  11 February 2011

Maria M. Cortalezzi ,
Vicki Colvin  and
Mark R. Wiesner
Maria M. Cortalezzi
Affiliation:
Energy and Environmental Systems Institute, Rice University, 6100 Main St. MS-317, Houston, TX 77005, USA.
Vicki Colvin
Affiliation:
Department of Chemistry, Rice University, 6100 Main St. MS-60, Houston, TX 77005, USA.
Mark R. Wiesner
Affiliation:
Energy and Environmental Systems Institute, Rice University, 6100 Main St. MS-317, Houston, TX 77005, USA.
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Abstract

Porous solids were obtained from self-assembled deposits of silica nanoparticles used as templates to form 3-D porous membranes. The effect of the solvent chemistry on the morphology of the deposits was investigated. The parameters of interest are surface tension and ionic strength of the solvent, due to electrostatic and capillary interactions. Deposits of nanoparticles of different sizes were obtained for a variety of conditions. The deposits were imaged using SEM and showed distinctive structures for each of the solvent chemistries. The phenomenon is consistent with the DVLO theory and calculations of capillary interaction energy.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 752: Symposium AA – Membranes–Preparation, Properties and Applications , 2002 , AA5.4
Copyright
Copyright © Materials Research Society 2003

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References

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