Morphology and Polymorph Control of Calcium Carbonate via a Facile Additive-Free Route

• 作者: ZHAO Dazhou
• 来源期刊: 武汉大学自然科学学报（英文版）
• 学科: 化学
• 年，卷（期）: 2020,（5）
• 所属期刊栏目: Chemistry
• 页码范围: 423-427
• 页数: 5页
• 分类号: O611.4|O643.1
• 语种: 英文
• DOI: 10.19823/j.cnki.1007-1202.2020.0053

摘要

In this paper,we reported a facile additive-free route for synthesizing calcium carbonate (CaCO3) with different morphologies and polymorphs by a precipitation reaction method between Ca(CH3COO)2 and NaHCO3 in water and ethylene glycol (H2O/EG) mixed solvent.It has been found that the concentration of Ca2+ and HCO3-,the volume ratio of H2O/EG and the reaction temperature are turned out to be important parameters for the morphology and polymorph of CaCO3.Various interesting morphologies,such as the spherical,elliptoid,spindle-like,petal-like,cricoid,cubic,plate-like and rod-like can be easily obtained.Pure polymorphs of vaterite,calcite and aragonite can also be tuned by adjusting experimental conditions.The studies might be helpful to provide new insights into the morphosynthesis and crystalline phase control of other inorganic materials.O 611.4;O 643.1