Kinetics of crystal growth of glycine manganese chloride in aqueous supersaturated solutions

Abstract

In the present work, by using atomic force microscopy (AFM), the existence of periodic steps facilitates an aligned layer-over-layer (LOL) growth has been investigated for glycine manganese chloride (GMC) crystal. Nucleation and growth kinetics renders the information about the crystal growth process, which can be adopted to grow large size crystals. As for the crucial parameters in growing bulk crystal of GMC, the interfacial energy and growth activation energy have been calculated simultaneously from the induction time data without knowledge of the real growth rate of small nuclei. Additionally, various nucleation parameters involved in nucleation kinetics have been computed and described them as a function of temperature, degree of supersaturation. The results indicate that the growth activation energy for GMC is 13.34 kJ/mol, which suggests that the growth rate of small nuclei in the agitated induction time experiments is diffusion controlled.