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

作     者：ZHAO Dazhou ZHAO Dazhou

作者机构：School of Chemistry&Chemical EngineeringShaanxi Xueqian Normal UniversityXi'an 710100ShaanxiChina 

出 版 物：《Wuhan University Journal of Natural Sciences》 (武汉大学学报（自然科学英文版）)

年 卷 期：2020年第25卷第5期

页      面：423-427页

核心收录：

学科分类：07[理学] 070304[理学-物理化学(含∶化学物理)] 0703[理学-化学] 070301[理学-无机化学] 

基　　金：the National Natural Science Foundation of China(50573030) the Scientific Research Program Funded by Shaanxi Provincial Education Department(20JK0584)。 

主　　题：calcium carbonate precipitation reaction water and ethylene glycol(H2O/EG) morphology polymorph 

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 Ca^2+ 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.