Abstract:

The crystal growth of CaCO3 with dodecylbenzenesulfonate sodium(SDBS) and L-histidine as growth regulators were studied were characterized with powder X-ray diffraction and infrared spectrometry. We also used scanning electron microscopy to analyze the crystal shapes of generated CaCO3 in order to study the effect of surfactant concentration, temperature and solvent composition on the crystal morphology and shape of CaCO3. The results show that under experimental conditions, the concentration of surfactant SDBS has no effect on the crystal morphology of CaCO3, but affect the shapes of the crystals, in the mean time, the temperature and solvent composition greatly affect the crystal morphology and crystal shape of CaCO3.

Key words: L-histidine, DMF, SDBS, calcite, Aragonite, vaterite