Unraveling the structural ordering of water in amorphous calcium carbonate using neutron pdf-analysis
Amorphous calcium carbonates (ACC) are interesting materials, serving as metastable intermediates for crystalline calcium carbonate formation, but also form stable storage units in biological samples. Studying the structure of this material therefore provides us information on how nature produces intricate hierarchical structures and provides us control over the chemical and structural properties of the final crystalline product. In this study we intend to investigate the structure of water inside the ACC (~CaCO3*H2O) using neutron pdf-analysis, where previous investigations using X-ray diffraction and NMR were unable to give a trustworthy image of the water structure. We plan to compare deuterated and non-deuterated samples with different extent of hydration as well as ACC samples with two different particle sizes and with or without the presence of magnesium.
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Wouter.J.E.M. Habraken; BERTINETTI Luca; CUELLO Gabriel; Anders C. S. Jensen; SCHNECK Emanuel and Zhaoyong Zou. (2015). Unraveling the structural ordering of water in amorphous calcium carbonate using neutron pdf-analysis. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.6-06-464
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