Skin-Deep Surface Patterning of Calcite
Skin-Deep Surface Patterning of Calcite
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DOI：
10.1021/acs.chemmater.9b02421
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发表时间：
2019-11-12
影响因子：
8.6
通讯作者：
Meldrum, Fiona C.
中科院分区：
文献类型：
--
作者：
Green, David C.;Shida, Yosuke;Meldrum, Fiona C.
可溶性添加剂对方解石（CaCO 3）生长的影响通常基于晶体形态的变化而合理化，其中添加剂与晶体表面上的尖锐或钝台阶的优先关联产生特定的生长形式。在这项工作中，我们调查的影响，一个高度酸性的有机添加剂与方解石，cp 20 k从藤壶Megabalanus罗莎，并证明，除了修改晶体形态，添加剂可用于生成方解石晶体与不同的表面结构。这些可能会产生有趣的光学效应，在涂料和油漆等应用中可能很重要。这些表面特征形成在溶解/再沉淀过程中的晶体在溶液中的晶体的孵育过程中的晶体表面，和共聚焦荧光显微镜证实，它们仅限于晶体的表面。还可以使用替代添加剂、添加剂的混合物和通过改变溶液条件来调整表面图案化。值得注意的是，我们还表明，表面结构可用于确定添加剂的相互作用模式与微观表面步骤的条件下，只有轻微的变化，形态发生。
The influence of soluble additives on the growth of calcite (CaCO3) is usually rationalized based on changes in crystal morphologies, where preferential association of the additives with either the acute or obtuse steps on the crystal surface gives rise to specific growth forms. In this work we investigate the influence of a highly acidic organic additive with calcite, cp20k from the barnacle Megabalanus rosa, and demonstrate that in addition to modifying the crystal morphology, additives can be used to generate calcite crystals with different surface architectures. These can potentially rise to interesting optical effects that may be important in applications such as in coatings and paints. These surface features form during dissolution/reprecipitation at the crystal surface during the incubation of crystals in solution, and confocal fluorescence microscopy confirmed they are limited to the surface of the crystal only. The surface patterning can also be tuned using alternative additives, mixtures of additives and by varying the solution conditions. Notably, we also show that surface structures can be used to determine the mode of interaction of additives with the microscopic surface steps under conditions where only minor changes in morphology have occurred.