以碳酸钠和氯化钙为原料、十二烷基磺酸钠（SDS）和聚乙二醇（PEG）为晶型控制剂，采用复分解方法制备了碳酸钙中空微球。利用FESEM、FETEM、XRD和FT-IR等分别对样品的形貌、结构和晶型进行表征，并考察了反应温度、晶型控制剂添加量对碳酸钙晶体形貌的影响。结果表明，当反应温度为20℃、SDS浓度为0.05 mol/L、PEG质量浓度为20 g/L时可制备出具有纯相方解石晶型的碳酸钙中空微球。初步机理分析表明，阴离子表面活性剂SDS与非离子型表面活性剂PEG间的相互作用形成复合胶束，对碳酸钙的形貌生长有重要影响。

Calcium carbonate micro-spheres with hollow structure are prepared via double decomposition method by using sodium carbonate and calcium chloride as raw materials,sodium dodecyl sulfonate (SDS) and polyethylene glycol (PEG) as crystal control agents.Field emission scanning electron microscopy (FESEM),field emission transmission electron microscopy (FETEM),X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR) are employed to characterize the morphology,structure and crystal form of the samples.The effects of reaction temperature,the dosages of SDS and PEG on the morphology of calcium carbonate crystal are investigated.It is shown that calcium carbonate hollow micro-spheres with calcite crystal form can be obtained when reaction temperature is 20℃,the dosage of SDS is 0.05 mol·L^-1,and the dosage of PEG is 20 g·L^-1.Preliminary analysis on the growth mechanism shows that the as-formed composite micelles due to the interaction between anionic surfactant SDS and non-ionic surfactant PEG have an important influence on the morphology growth of the as-obtained calcium carbonate.

陈义雯(1996-),女,硕士研究生,研究方向为无机材料的制备,2304197228@qq.com