TY - JOUR
T1 - Orientation and morphology of calcite nucleated under floating monolayers
T2 - A magnesium-ion-enhanced nucleation study
AU - Stripe, Benjamin
AU - Uysal, Ahmet
AU - Dutta, Pulak
N1 - Funding Information:
We thank Jianming Bai for his assistance at X-14A. This work was supported by the US Department of Energy under Grant no. DE-FG02-84ER45125 . In situ grazing incidence X-ray data was collected at the National Synchrotron Light Source beam line X-14A. The National Synchrotron Light Source is supported by USDOE Contract # DE-AC02-98CH10886 . The SEM images were recorded at the Electron Probe Instrumentation Center, Northwestern University
PY - 2011/3/15
Y1 - 2011/3/15
N2 - We have studied the biomimetic growth of calcium carbonate crystals under floating monolayer templates, in the presence of Mg ions, using grazing incidence X-ray diffraction and SEM imaging. Crystals grown under sulfate monolayers nucleate from the (0 0 1) plane with and without Mg ions, while undergoing substantial changes in morphology. Crystals grown under alcohol monolayers nucleate from the (1 0 4) plane in the presence of Mg. X-ray data do not detect orientation in crystals grown under acid monolayers, but at higher Mg concentrations the resulting morphologies are indicative of template-nucleated growth. These results suggest that Mg provides living organisms a way to enhance the orientation and control the morphology of acid-templated crystals.
AB - We have studied the biomimetic growth of calcium carbonate crystals under floating monolayer templates, in the presence of Mg ions, using grazing incidence X-ray diffraction and SEM imaging. Crystals grown under sulfate monolayers nucleate from the (0 0 1) plane with and without Mg ions, while undergoing substantial changes in morphology. Crystals grown under alcohol monolayers nucleate from the (1 0 4) plane in the presence of Mg. X-ray data do not detect orientation in crystals grown under acid monolayers, but at higher Mg concentrations the resulting morphologies are indicative of template-nucleated growth. These results suggest that Mg provides living organisms a way to enhance the orientation and control the morphology of acid-templated crystals.
KW - A1. Biocrystallization
KW - A1. X-ray diffraction
KW - B1. Calcium compounds
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U2 - 10.1016/j.jcrysgro.2011.01.102
DO - 10.1016/j.jcrysgro.2011.01.102
M3 - Article
AN - SCOPUS:79952627186
VL - 319
SP - 64
EP - 69
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
SN - 0022-0248
IS - 1
ER -