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Colloidal Stabilization of Calcium Carbonate Prenucleation Clusters with Silica

Kellermeier, Matthias ; Gebauer, Denis ; Melero-Garcia, Emilio ; Drechsler, Markus ; Talmon, Y. ; Kienle, Lorenz ; Cölfen, Helmut ; Garcia-Ruiz, Juan Manuel ; Kunz, Werner



Abstract

Calcium carbonate pptn. proceeds via a complex multistage scenario involving neutral ion clusters as precursors and amorphous phases as intermediates, which finally transform to crystals. Although the existence of stable clusters in soln. prior to nucleation has been demonstrated, the mol. mechanisms by which they ppt. are still obscure. Here, direct insight into the processes that drive the ...

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