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Aerosol Coating of Silica Fibers with Nanoparticles

Published online by Cambridge University Press:  15 February 2011

George P. Fotou ,
Steven J. Scott  and
Sotiris E. Pratsinis
George P. Fotou
Affiliation:
Department of Chemical Engineering, University of Cincinnati, Cincinnati, OH 45221-0171, USA.
Steven J. Scott
Affiliation:
Department of Chemical Engineering, University of Cincinnati, Cincinnati, OH 45221-0171, USA.
Sotiris E. Pratsinis
Affiliation:
Department of Chemical Engineering, University of Cincinnati, Cincinnati, OH 45221-0171, USA.
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Abstract

Ultrafine silica fibers were coated with nanosized particles by an aerosol process. The fibers were introduced in a diffusion flame reactor where silica particle formation took place by oxidation of SiCl4. Coagulation of particles with fibers resulted in fractal-like structures on the latter, enhancing the specific surface area of the product fibers. Ferrocene used as an additive at a mole fraction of 6.6 × 10−5 in the flame promoted the surface area enhancement. A sol-gel coating technique was also used to produce particle coated fibers.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 344: Symposium I – Materials and Processes for Environmental Protection , 1994 , 27
Copyright
Copyright © Materials Research Society 1994

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