Morphology Control of SrCO3 Crystals using Complexons as Modifiers in the Ethanol-water mixtures

摘要

Using SrCl2·6H2O and Na2CO3 as the main raw materials and adding different complexons as modifiers with simple co-precipitation method=SrCO3 crystals with distinct mor-phologies like spherical=bundle-like=overlapping plate-like=hexagonal star-like=dumbbell-like=etc.can be synthesized in the ethanol-water mixtures.The samples were characterized by X-ray diffraction(XRD)=scanning electron microscopy(SEM) and Fourier transform infrared spectrograph(FT-IR).The interrelated effect mechanism is presented in the end.Results show that the modifier carboxyl groups play a significant role in controlling the SrCO3 crystal morphologies=which can alter the crystal growth unit(Sr2+) supply mode and induce the crystal formation with the morphologies matching their spatial configurations.