Morphology and formation mechanism of vaterite particles grown in glycine-containing aqueous solutions
Morphology and formation mechanism of vaterite particles grown in glycine-containing aqueous solutions
复制标题
含甘氨酸水溶液中球霰石颗粒的形貌及形成机制
DOI：
10.1016/j.msec.2005.09.098
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
Q. Feng
中科院分区：
文献类型：
--
作者：
W. Hou;Q. Feng
碳酸钙晶体在含甘氨酸的水溶液中使用两种方法沉淀：CO 32-滴下法或扩散法。通过调节滴加速度和甘氨酸（Gly）浓度，可以控制球文石颗粒的形貌和比例。在此基础上，提出了片状生长机制来解释球文石的各种形貌，包括纺锤形、球形和团聚体。进一步的讨论提出，搅拌和甘氨酸都可以作为成核能改变剂，从而交替球文石和方解石的成核优先级。
Calcium carbonate crystals were precipitated in glycine-containing aqueous solutions using two methods: CO32−dripping method or diffusion method. By modulating the dripping velocity and glycine (Gly) concentration, we can control the morphologies and proportion of the acquired vaterite particles. Based on the observation, a sheet-growth mechanism was developed to explain the various vaterite morphologies, including spindly, spherical and agglomerate ones. Further discussion proposed that stirring and Gly may both serve as nucleation energy changers, which alternates the nucleation priority of vaterite and calcite.