Spray synthesis of monodisperse sub-micron spherical silica particles
Spray synthesis of monodisperse sub-micron spherical silica particles
A novel spray approach has been developed for the synthesis of controlled size oxide microparticles and the technique is illustrated by the preparation of ca. 250 nm silica particles. Stöber-type spherical silica of uniform particle size is formed by spraying a tetraethoxysilane precursor solution onto the surface of a stirred ammoniacal hydrolysis medium. Particle size characteristics are determined through selection of reaction conditions, with solvent, temperature, reagent concentrations and mixing contributing to the particle size and dispersity. The silica products have been characterized by particle size distribution measurements, electron microscopy and nitrogen adsorption studies. The mechanism of particle formation under differing experimental conditions is discussed.
fraction, powder technology, size, silica, characterization, nanomaterials, synthesis, model, spheres, growth, nanoparticles, aggregation, catalyzed-hydrolysis, spherical silica, spray, microscopy, sol-gel preparation
1951-1954
Howard, A.G.
12632e33-1266-49ec-ab18-8ca20c4dee72
Khdary, N.H.
23ed7d6e-62f9-4c0b-b45a-f86ef5e3c766
April 2007
Howard, A.G.
12632e33-1266-49ec-ab18-8ca20c4dee72
Khdary, N.H.
23ed7d6e-62f9-4c0b-b45a-f86ef5e3c766
Howard, A.G. and Khdary, N.H.
(2007)
Spray synthesis of monodisperse sub-micron spherical silica particles.
Materials Letters, 61 (8-9), .
(doi:10.1016/j.matlet.2006.07.110).
Abstract
A novel spray approach has been developed for the synthesis of controlled size oxide microparticles and the technique is illustrated by the preparation of ca. 250 nm silica particles. Stöber-type spherical silica of uniform particle size is formed by spraying a tetraethoxysilane precursor solution onto the surface of a stirred ammoniacal hydrolysis medium. Particle size characteristics are determined through selection of reaction conditions, with solvent, temperature, reagent concentrations and mixing contributing to the particle size and dispersity. The silica products have been characterized by particle size distribution measurements, electron microscopy and nitrogen adsorption studies. The mechanism of particle formation under differing experimental conditions is discussed.
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Submitted date: 15 June 2006
Published date: April 2007
Keywords:
fraction, powder technology, size, silica, characterization, nanomaterials, synthesis, model, spheres, growth, nanoparticles, aggregation, catalyzed-hydrolysis, spherical silica, spray, microscopy, sol-gel preparation
Identifiers
Local EPrints ID: 54318
URI: http://eprints.soton.ac.uk/id/eprint/54318
ISSN: 0167-577X
PURE UUID: 397d9092-0fd3-40da-8435-c2a28b1cf472
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Date deposited: 31 Jul 2008
Last modified: 15 Mar 2024 10:46
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Author:
A.G. Howard
Author:
N.H. Khdary
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