Dynamic Light Scattering Study of the Inhibiting Effect on Crystal Growth of Calcium Carbonate
Dynamic Light Scattering Study of the Inhibiting Effect on Crystal Growth of Calcium Carbonate
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DOI：
10.1246/bcsj.20100228
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发表时间：
2011-03-15
影响因子：
4
通讯作者：
Notsu, Kenji
中科院分区：
文献类型：
--
作者：
Kamiya, Natsumi;Tsunomori, Fumiaki;Notsu, Kenji
本研究报告的第一个应用动态光散射观察碳酸钙晶体生长的过饱和溶液。在无镧和5 μ M镧掺杂条件下，测量了临界核半径（在Ω = 18时约为2 nm）周围的晶体尺寸分布。在前者中，散射光的强度平稳地增加，并且颗粒尺寸随时间增加。与未掺La的情况相比，掺La的情况下，颗粒的总散射体积较小，并且增长非常缓慢。结果表明，La3+对CaCO3晶体生长的抑制作用发生在晶体生长初期。
This study reports the first application of dynamic light scattering to observations of crystal growth of calcium carbonate from a supersaturated solution. Crystal size distributions around the critical nucleus radius (approximate to 2 nm at Omega = 18) were measured in La-free and 5 mu M La-doped conditions. In the former, the intensity of scattered light increased smoothly and particle size increased with time. In the case of La-doped condition, the total scattering volume of particles was smaller, and grew very slowly compared with the La-free condition. These results show that the inhibiting effect of La3+ on calcium carbonate occurred from the initial stage of crystal growth.