Morphology Change of Nitratine (NaNO3) from Aqueous Solution, in the Presence of Li+ and K+ Ions

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• 作者：Ra煤l Benages-Vilau ; Teresa Calvet ; Linda Pastero ; Dino Aquilano ; Miquel 脌ngel Cuevas-Diarte
• 刊名：Crystal Growth & Design
• 出版年：2015
• 出版时间：November 4, 2015
• 年：2015
• 卷：15
• 期：11
• 页码：5338-5344
• 全文大小：334K
• ISSN：1528-7505

文摘

It is usually accepted that the nitratine (NaNO₃) growth morphology is built by only the {10.4} form. In a previous paper, we noticed that it can be changed by addition of selected impurities. Accordingly, a deeper study was carried out to fix the conditions for nitratine morphology change in aqueous solutions by the addition of impurities. We used standard crystallization methodologies: constant crystallization temperature (from supersaturated solutions) and slow evaporation. Both K⁺ and Li⁺ ions can modify the nitratine growth shape. Additionally, in order to understand the shape change, we studied the crystal growth rate behavior of {10.4} faces in the presence of these ions and found that it shows a sudden decrease when an impurity is added. Finally, a simple model is proposed to describe how the morphology change takes place.