A Straightforward Treatment of Activity in Aqueous CaCO3 Solutions and the Consequences for Nucleation Theory. (5th December 2013)

• Record Type: Journal Article
• Authors: Kellermeier, Matthias; Picker, Andreas; Kempter, Andreas; Cölfen, Helmut; Gebauer, Denis
• Is Part Of: Advanced materials. Volume 26:Number 5(2014)
• Page Start: 752
• Page End: 757
• Publication Date: 2013-12-05
• Subjects: Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.201303643
• Languages: English
• ISSNs: 0935-9648

Abstract

<abstract abstract-type="graphical" xml:lang="en" id="adma201303643-abs-0001"> <title> <x xml:space="preserve">Abstract</x> </title> <p> <bold>The aqueous calcium carbonate system</bold> 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. <boxed-text content-type="graphic" position="anchor" orientation="portrait"><graphic position="anchor" mimetype="image" xlink:href="ark:/27927/pgg4sm2k0xj" orientation="portrait" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></boxed-text></p> </abstract>