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Synthesis of nanostructured silica powders by a room temperature aerosol process

Published online by Cambridge University Press:  10 February 2011

Jingyu Hyeon-Lee ,
Gregory Beaucage  and
Sotiris. E. Pratsinis
Jingyu Hyeon-Lee
Affiliation:
Department of Materials Science and Engineering, University of Cincinnati, Cincinnati, OH, 4522-0012
Gregory Beaucage
Affiliation:
Department of Materials Science and Engineering, University of Cincinnati, Cincinnati, OH, 4522-0012
Sotiris. E. Pratsinis
Affiliation:
Department of Chemical Engineering, University of Cincinnati, Cincinnati, OH, 45221-0171
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Abstract

Nano-sized porous silica powders are synthesized by a room temperature aerosol process. Reactant mixing configuration, reactant temperature, and drying temperature effects on the physical and morphological features of these powders are studied by nitrogen adsorption and small angle xray scattering techniques. These silica powders have high specific surface areas up to 600 m2/g, and show narrowly confined mesoporous characteristics. The powders display some structural change with temperature. The morphological features are modeled as mass fractals by small angle x-ray scattering. Measured fractal dimensions are around 2.8, indicating diffusion limited growth processes.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 520: Symposium P – Nanostructured Powders & Their Industrial Application , 1998 , 115
Copyright
Copyright © Materials Research Society 1998

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References

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