Synthesis in situ of active calcium carbonate nanoparticles via simulating biomineralization

A new method for mimic biomineralization was used to synthesize CaCO3. The organized organic substrates, which could associate with Ca2+ by means of molecular recognition and induce the nucleation and growth of CaCO3, were synthesized fristly, and followed by the preparation of the CaCO3 by carbonation of a solution of Ca(OH)(2) with CO2. Well dispersed spindle-like nano-CaCO3 particles with an average width of 50 nm and a ratio of diameter to length about 1 : 5 were obtained under the given experimental conditions. The products were characterized by FTIR spectra, TGA analysis and transmission electron microscope (TEM).