On the kinetics of phase transformations of dried porous vaterite particles immersed in deionized and tap water

Addition of dry vaterite particles in aqueous solution under different conditions induces its transformation into calcite and aragonite. We evidence that the stirring, the temperature and the water purity influence not only the transformation rate but also the obtained structure. In particular, it is shown that DI water, stirring and high temperature lead to the transformation of vaterite into single crystal nanowires of aragonite.