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Preparation of Vaterite Calcium Carbonate in the Form of Spherical Nano-size Particles with the Aid of Polycarboxylate Superplasticizer as a Capping Agent

Mohamed El-Shahate Ismaiel Saraya, Hanaa Hassan Abdel Latif Rokbaa

American Journal of Nanomaterials. 2016, 4(2), 44-51 doi:10.12691/ajn-4-2-3
  • Figure 1. Chemical structure of Polycarboxylate-type superplasticizer
  • Figure 2. FT-IR spectrum of Polycarboxylate-type superplasticizer
  • Figure 3. FTIR spectrum of CaCO3 in absence of polycarboxylate (a) and in presence of polycarboxylate(b)
  • Figure 4. XRD patterns of calcium carbonate samples prepared without (a) and with (b) PSS., □ calcite, ● vaterite
  • Figure 5. SEM images of CaCO3 samples (a, b) calcite particles prepared without PSS and (c, d) vaterite particles prepared with PSS
  • Figure 6. TEM Micrographs of CaCO3 formed in the presence of PSS
  • Figure 7. Shown the Schematic illustration of phase transformation process of the vaterite nanoparticles with PSS