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Formation of CaCO3 Deposits on Hard Surfaces-Effect of Bulk Solution Conditions and Surface Properties

Wang, Hao LU ; Alfredsson, Viveka LU ; Tropsch, Juergen; Ettl, Roland and Nylander, Tommy LU (2013) In ACS Applied Materials and Interfaces 5(10). p.4035-4045
Abstract
We have studied nucleation and crystal growth of calcium carbonate on hard surfaces, i.e. stainless steel and silica, at different temperatures, in relation to the corresponding bulk processes, using scanning electron microscopy (SEM), X-ray diffraction (XRD), and ellipsometry. In the bulk solution, a mixture of all three calcium carbonate crystalline polymorphs, calcite, aragonite, and vaterite, as well as amorphous particles was observed at 25 degrees C, while at 55 degrees C aragonite and calcite crystals dominated. On surfaces only calcite crystals were observed at 25 degrees C, whereas aragonite and calcite crystal adsorbed on the surfaces at 55 degrees C. Two kinds of nucleation and adsorption mechanism of CaCO3 crystals on hard... (More)
We have studied nucleation and crystal growth of calcium carbonate on hard surfaces, i.e. stainless steel and silica, at different temperatures, in relation to the corresponding bulk processes, using scanning electron microscopy (SEM), X-ray diffraction (XRD), and ellipsometry. In the bulk solution, a mixture of all three calcium carbonate crystalline polymorphs, calcite, aragonite, and vaterite, as well as amorphous particles was observed at 25 degrees C, while at 55 degrees C aragonite and calcite crystals dominated. On surfaces only calcite crystals were observed at 25 degrees C, whereas aragonite and calcite crystal adsorbed on the surfaces at 55 degrees C. Two kinds of nucleation and adsorption mechanism of CaCO3 crystals on hard surfaces were observed, depending on the surface orientation (vertical or horizontal, i.e., subject to sedimentation) in the bulk solution. A model for the relation between interfacial layer structure, the substrate, and the solution crystallization is discussed based on the observed difference in deposition between type of surfaces and surface orientation. In addition, the effect of magnesium ion on the morphology of calcium carbonate crystals is discussed. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
calcium carbonate, surface deposition, calcite, nucleation, ellipsometry, scanning electron microscopy
in
ACS Applied Materials and Interfaces
volume
5
issue
10
pages
4035 - 4045
publisher
The American Chemical Society
external identifiers
  • wos:000319551200010
  • scopus:84878329072
ISSN
1944-8244
DOI
10.1021/am401348v
language
English
LU publication?
yes
id
c4b37b95-87cd-42cd-b208-41c055fa0643 (old id 3931107)
date added to LUP
2013-07-16 09:19:07
date last changed
2019-07-21 03:07:29
@article{c4b37b95-87cd-42cd-b208-41c055fa0643,
  abstract     = {We have studied nucleation and crystal growth of calcium carbonate on hard surfaces, i.e. stainless steel and silica, at different temperatures, in relation to the corresponding bulk processes, using scanning electron microscopy (SEM), X-ray diffraction (XRD), and ellipsometry. In the bulk solution, a mixture of all three calcium carbonate crystalline polymorphs, calcite, aragonite, and vaterite, as well as amorphous particles was observed at 25 degrees C, while at 55 degrees C aragonite and calcite crystals dominated. On surfaces only calcite crystals were observed at 25 degrees C, whereas aragonite and calcite crystal adsorbed on the surfaces at 55 degrees C. Two kinds of nucleation and adsorption mechanism of CaCO3 crystals on hard surfaces were observed, depending on the surface orientation (vertical or horizontal, i.e., subject to sedimentation) in the bulk solution. A model for the relation between interfacial layer structure, the substrate, and the solution crystallization is discussed based on the observed difference in deposition between type of surfaces and surface orientation. In addition, the effect of magnesium ion on the morphology of calcium carbonate crystals is discussed.},
  author       = {Wang, Hao and Alfredsson, Viveka and Tropsch, Juergen and Ettl, Roland and Nylander, Tommy},
  issn         = {1944-8244},
  keyword      = {calcium carbonate,surface deposition,calcite,nucleation,ellipsometry,scanning electron microscopy},
  language     = {eng},
  number       = {10},
  pages        = {4035--4045},
  publisher    = {The American Chemical Society},
  series       = {ACS Applied Materials and Interfaces},
  title        = {Formation of CaCO3 Deposits on Hard Surfaces-Effect of Bulk Solution Conditions and Surface Properties},
  url          = {http://dx.doi.org/10.1021/am401348v},
  volume       = {5},
  year         = {2013},
}