Figure 5. SEM images of CaCO3 samples (a, b) calcite particles prepared without PSS and (c, d) vaterite particles prepared with PSS

From

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