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Phase and morphology evolution of vaterite crystals in water/ethanol binary solvent
Author(s) -
Jin Dalai,
Wang Fei,
Yue Linhai
Publication year - 2011
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201000484
Subject(s) - vaterite , aragonite , calcite , chemistry , solvent , phase (matter) , metastability , mole fraction , morphology (biology) , crystal (programming language) , crystallography , chemical engineering , mineralogy , organic chemistry , computer science , engineering , programming language , biology , genetics
Keeping stability is important for metastable vaterite to be applied. In this work, crystal evolution of vaterite in water/ethanol binary solvent (WEBS) was investigated. Phase identification was confirmed by XRD measurement. It is found that the stability of vaterite is sensitive to the concentration of surplus CO 3 2‐ and the ethanol mole fraction in WEBS. The vaterite phase would transform to either aragonite or calcite decided by the surplus CO 3 2‐ ions or Ca 2+ ions, respectively. SEM observation shows that the polymorph evolution also induced the morphology change. (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)