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

Date

2007

Authors

Voinescu, Alina E
Kellermeier, Matthias
Carnerup, Anna
Larsson, Ann-Kristin
Touraud, Didier
Hyde, Stephen
Kunz, Werner

Journal Title

Journal ISSN

Volume Title

Publisher

Elsevier

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).

Description

Keywords

Keywords: Barium carbonate composites; Biomorphs; Strontium carbonate composites; Alkaline earth metal compounds; Composite materials; Coprecipitation; Energy dispersive X ray analysis; Hydrolysis; Optical microscopy; Scanning electron microscopy; Silica; Carbonate A2. Growth from solutions; B1. Barium carbonate composite; B1. Biomorphs; B1. Organic silica; B1. Strontium carbonate composite

Citation

URI

http://hdl.handle.net/1885/35641

Collections

ANU Research Publications

Source

Journal of Crystal Growth

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

DOI

10.1016/j.jcrysgro.2007.03.060

Restricted until

2037-12-31

Downloads

File
Description
01_Voinescu_Co-precipitation_of_silica_and_2007.pdf (999.77 KB)

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