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中文摘要：
以有机小分子水杨酸为添加剂对碳酸钙晶体的生长进行调控,并用X-射线粉末衍射（XRD）、扫描电子显微镜（SEM）和热重分析（TGA）方法对碳酸钙晶体的晶型和形貌进行了表征。结果显示,当pH值为7.0,加入0.04 mmoL水杨酸时,反应6小时和12小时后碳酸钙晶体的晶型为球霰石和方解石的混合晶型;而当矿化时间延长到24小时后,球霰石的晶型几乎消失,产物基本为方解石。
英文摘要：
In this paper,2-hydroxybenzoic acid is used as additive to control the crystallization of CaCO3.The polymorph and morphology of crystals are characterized by X-ray diffraction（XRD）、scanning electron microscopy（SEM） and thermogravimetric analysis（TGA）.As the results have shown,both spherical vaterite and calcite are produced after 6h and 12h when the amount of 0.04mmoL of 2-hydroxybenzoic acid is added and the pH reached 7.0.When the mineralization time is 24h,however,only calcite crystals are formed while spherical vaterite crystals almost disappeared.
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