Effect of Crystal Orientation Agents on Morphology of Nano-CaCO<sub>3</sub>

Using intermittent bubbling carbonation method to prepare nanoCaCO 3 , the effect of crystal orientation agents on the morphology of nanoCaCO 3 was studied. The nanoCaCO 3 was characterized by means of field emission scanning electron microscope (FE-SEM), X-ray diffraction (XRD), Laser particle analyzer. The results showed that the different shapes nanoCaCO 3 was synthesized by adding different crystal orientation agents to control the shape of the product. The as-prepared CaCO 3 were pure calcite crystal and the average particle sizes were within the range of 25.7 to 60.9 nm.