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Elsevier, Journal of Crystal Growth, 1(306), p. 152-158

DOI: 10.1016/j.jcrysgro.2007.03.060

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Co-precipitation of silica and alkaline-earth carbonates using TEOS as silica source

Journal article published in 2006 by Alina E. Voinescu, Matthias Kellermeier, Anna M. Carnerup, Ann-Kristin Larsson, Didier Touraud, Stephen T. Hyde, Werner Kunz ORCID
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This paper is available in a repository.

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Abstract

We explore the use of tetraethoxysilane (TEOS) as a silica source for the formation of carbonate-silica composite materials known as ‘biomorphs’. The basic hydrolysis of TEOS furnishes silica in a controllable fashion, allowing a significantly higher reproducibility of the obtained silica–barium and silica–strontium carbonate co-precipitates compared to commercial water glass silica used so far. We further discuss the influence of ethanol used as a co-solvent on the morphologies of biomorphs, which are examined by optical microscopy, field emission scanning electron microscopy (FESEM) and energy dispersive X-ray analysis (EDX).