@article{FarhadiKhouzani2015Disor-32028,
  year={2015},
  doi={10.1039/C5CE00720H},
  title={Disordered amorphous calcium carbonate from direct precipitation},
  number={26},
  volume={17},
  journal={CrystEngComm},
  pages={4842--4849},
  author={Farhadi-Khouzani, Masoud and Chevrier, Daniel M. and Güttlein, Patricia and Hauser, Karin and Zhang, Peng and Hedin, Niklas and Gebauer, Denis}
}

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    <dcterms:title>Disordered amorphous calcium carbonate from direct precipitation</dcterms:title>
    <dcterms:abstract xml:lang="eng">Amorphous calcium carbonate (ACC) is known to play a prominent role in biomineralization. Different studies on the structure of biogenic ACCs have illustrated that they can have distinct short-range orders. However, the origin of so-called proto-structures in synthetic and additive-free ACCs is not well understood. In the current work, ACC has been synthesised in iso-propanolic media by direct precipitation from ionic precursors, and analysed utilising a range of different techniques. The data suggest that this additive-free type of ACC does not resemble clear proto-structural motifs relating to any crystalline polymorph. This can be explained by the undefined pH value in iso-propanolic media, and the virtually instantaneous precipitation. Altogether, this work suggests that aqueous systems and pathways involving pre-nucleation clusters are required for the generation of clear proto-structural features in ACC. Experiments on the ACC-to-crystalline transformation in solution with and without ethanol highlight that polymorph selection is under kinetic control, while the presence of ethanol can control dissolution re-crystallisation pathways.</dcterms:abstract>
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    <dc:creator>Hauser, Karin</dc:creator>
    <dc:creator>Farhadi-Khouzani, Masoud</dc:creator>
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    <dc:contributor>Hedin, Niklas</dc:contributor>
    <dc:creator>Gebauer, Denis</dc:creator>
    <dc:contributor>Hauser, Karin</dc:contributor>
    <dc:contributor>Zhang, Peng</dc:contributor>
    <dc:contributor>Chevrier, Daniel M.</dc:contributor>
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    <dc:creator>Güttlein, Patricia</dc:creator>
    <dc:rights>Attribution 3.0 Unported</dc:rights>
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