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首页> 外文期刊>Journal of Crystal Growth >Crystal growth of calcium carbonate with various morphologies in different amino acid systems
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Crystal growth of calcium carbonate with various morphologies in different amino acid systems

机译：不同氨基酸系统中各种形态碳酸钙的晶体生长

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摘要

In our experiments, four kinds of amino acids, such as L-Cystine (L-Cys), L-Tyrosine (L-Tyr), DL-Aspartic Acid (DL-Asp), L-Lysine (L-Lys) and the mixed systems of L-Tyr (or L-Lys)/Mg~(2+), were used as effective modifiers to mediate the crystallization of CaCO_3. The obtained crystals were characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD). As the results have shown, calcite was formed in L-Cys system while both calcite and spherical vaterite with various morphologies were produced in the presence of L-Tyr, DL-Asp, and L-Lys whose ability to induce the formation of vaterite was enhanced in turn. It indicated that amino acids played an important role in the process of crystal growth of CaCO_3, the addition of Mg~(2+) was helpful for the formation of aragonite. The possible formation mechanism of CaCO_3 produced in different amino acid aqueous solutions was discussed in the end.
机译：在我们的实验中，有四种氨基酸，例如L-胱氨酸（L-Cys），L-酪氨酸（L-Tyr），DL-天冬氨酸（DL-Asp），L-赖氨酸（L-Lys）和L-Tyr（或L-Lys）/ Mg〜（2+）混合体系被用作介导CaCO_3结晶的有效改性剂。通过扫描电子显微镜（SEM），傅立叶变换红外光谱（FT-IR）和X射线衍射（XRD）表征获得的晶体。结果表明，方解石在L-Cys系统中形成，而方解石和球形v石均在存在L-Tyr，DL-Asp和L-Lys的情况下产生，其诱导球ate石的形成能力为依次增强。表明氨基酸在CaCO_3晶体生长过程中起重要作用，Mg〜（2+）的加入有助于文石的形成。最后讨论了在不同氨基酸水溶液中生成CaCO_3的可能机理。

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