A straightforward treatment of activity in aqueous CaCo3 solutions and the consequences for nucleation theory

Kellermeier, M.; Picker, A.; Kempter, A.; Cölfen, H.; Gebauer, Denis

doi:10.1002/adma.201303643

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Authors

Kellermeier, M.

Picker, A.

Kempter, A.

Cölfen, H.

Gebauer, Denis

Date

2014

Type

Journal Article

Metadata

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Citation

Kellermeier, M. and Picker, A. and Kempter, A. and Cölfen, H. and Gebauer, D. 2014. A straightforward treatment of activity in aqueous CaCo3 solutions and the consequences for nucleation theory. Advanced Materials. 26 (5): pp. 752-757.

Source Title

Advanced Materials

DOI

10.1002/adma.201303643

ISSN

0935-9648

School

Department of Chemistry

URI

http://hdl.handle.net/20.500.11937/63090

Collection

Curtin Research Publications

Abstract

The aqueous calcium carbonate system is rigorously investigated with respect to ionic activity. Ideal treatment is found to be a good approximation at relevant concentrations. The data further show that bound CaCO3 species cannot be regarded as «inactive» during nucleation but rather appear to play a key role in the phase-separation process, and that amorphous calcium carbonate (ACC) can be precipitated from much lower levels of supersaturation than previously believed. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.