Influence of the initial chemical conditions on the rational design of silica particles

Journal article


Bourebrab, MA, Oben, DT, Durand, GG, Taylor, PG, Bruce, JI, Bassindale, AR and Taylor, A (2018). Influence of the initial chemical conditions on the rational design of silica particles. Journal of Sol-Gel Science and Technology. 88 (2), pp. 430-441.
AuthorsBourebrab, MA, Oben, DT, Durand, GG, Taylor, PG, Bruce, JI, Bassindale, AR and Taylor, A
Abstract

© 2018, The Author(s). The influence of the water content in the initial composition on the size of silica particles produced using the Stöber process is well known. We have shown that there are three morphological regimes defined by compositional boundaries. At low water levels (below stoichiometric ratio of water:tetraethoxysilane), very high surface area and aggregated structures are formed; at high water content (>40 wt%) similar structures are also seen. Between these two boundary conditions, discrete particles are formed whose size are dictated by the water content. Within the compositional regime that enables the classical Stöber silica, the structural evolution shows a more rapid attainment of final particle size than the rate of formation of silica supporting the monomer addition hypothesis. The clearer understanding of the role of the initial composition on the output of this synthesis method will be of considerable use for the establishment of reliable reproducible silica production for future industrial adoption. [Figure not available: see fulltext..

Keywords0912 Materials Engineering; Materials
Year2018
JournalJournal of Sol-Gel Science and Technology
Journal citation88 (2), pp. 430-441
ISSN0928-0707
Digital Object Identifier (DOI)doi:10.1007/s10971-018-4821-9
Web address (URL)https://link.springer.com/content/pdf/10.1007%2Fs10971-018-4821-9.pdf
Publication dates
Print24 Sep 2018
Publication process dates
Deposited31 Oct 2018
Accepted14 Sep 2018
Publisher's version
License
CC BY 4.0
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