Vaterite aggregate grooves are successfully obtained by the Ca(OH)₂-CO₂ reaction system in the presence of aspartic acid (Asp). Then, the dynamic changes of pH, conductivity, the concentration of Ca²⁺ and OH^– in the suspension during the reaction process are tested. Moreover, the morphologies and polymorphs of the precipitates at different reaction time are studied by the field emission scanning electron microscope (FE-SEM) and X-ray Diffraction (XRD). The results show that when Asp is not added in the Ca(OH)₂ suspension, the precipitates are calcite, while the carbonization precipitates with Asp are vaterite. Furthermore, in the presence of Asp, the carbonization process in the Ca(OH)₂ suspension has a coating-fragmentation behavior, and vaterite aggregate grooves can be formed after 110 min. In particular, Asp plays an important role in the nucleation, crystallization, and growth of CaCO₃, and then a novel formation mechanism of vaterite aggregate grooves is proposed in this paper.

中文翻译：

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通过将 CO2 鼓泡到 Ca(OH)2 悬浮液中，用天冬氨酸 (Asp) 形成和稳定球霰石骨料槽

在天冬氨酸 (Asp) 存在下，通过 Ca(OH) ₂ -CO ₂反应体系成功获得球霰石聚集体凹槽。然后，pH值，电导率的动态变化，Ca的浓度²⁺和OH ^€“在悬浮液在反应过程中进行测试。此外，通过场发射扫描电子显微镜（FE-SEM）和X射线衍射（XRD）研究了不同反应时间沉淀物的形貌和多晶型物。结果表明，Ca(OH) ₂悬浮液中未加入Asp时，沉淀物为方解石，而含Asp的碳化沉淀物为球霰石。此外，在 Asp 的存在下，Ca(OH) _{2 中}的碳化过程悬浮液具有包覆-碎裂行为，110 min后可形成球霰石骨料槽。特别是Asp在CaCO ₃的成核、结晶和生长中起重要作用，进而提出了球霰石聚集体凹槽的新形成机制。