Abstract
Hollow CaCO 3 microspheres were successfully synthesized using sodium carbonate and calcium chloride through a precipitation reaction method at room temperature. Polyvinylpyrrolidone (PVP), together with sodium dodecyl sulfonate (SDS), was employed as template for the controlled growth of hollow CaCO 3 microspheres. The concentration of SDS was an important factor to control the synthesis of hollow CaCO 3 microspheres. It suggested that the PVP–SDS complex micelles played a key role in controlling the growth of biominerals X-ray diffraction (XRD), FESEM and TEM confirmed that hollow CaCO 3 microspheres consisting of calcite crystals were synthesized In the present work, we also proposed a hypothetical mechanism for the formation process of hollow CaCO 3 microspheres.
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