球霰石
方解石
碳酸钙
生物矿化
傅里叶变换红外光谱
结晶
成核
化学工程
高分辨率透射电子显微镜
化学
Crystal(编程语言)
仿生合成
针状的
扫描电子显微镜
晶体生长
材料科学
透射电子显微镜
结晶学
纳米技术
矿物学
文石
有机化学
微观结构
复合材料
工程类
程序设计语言
计算机科学
作者
Tingyu Yang,Jilagamazhi Fu,Liang Ma,Hong Du,Xiaoqing Yue,Bosheng Zhao,Cuiyan Wang
标识
DOI:10.1016/j.msec.2020.111019
摘要
In biomineralization, organisms have the abilities to produce biominerals with superior properties. One of the most attractive features of biominerals is the presence of the proteins consisting of different contents of amino acids in crystals. In the present work, L-phenylalanine (Phe) was used as an additive for the controllable crystallization of calcium carbonate (CaCO3). The obtained CaCO3 crystals were characterized by field emission scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), elemental analysis and high-resolution transmission electron microscopy (HRTEM). The experimental results suggest that single calcite crystals are formed at low Phe concentrations. High concentrations of Phe inhibit the nucleation and growth of calcite, and promote the formation of vaterite crystals with solid or hollow structures. The morphology and crystal form of CaCO3 are also significantly affected by the flow rate of CO2. After that, a possible mechanism (competition mechanism) action of Phe in the formation of CaCO3 is proposed. Finally, the effects of temperature on the formation of vaterite were determined to explore the growth mechanism of hexagonal vaterite. The work of controlling the preparation of CaCO3 crystals in the presence of Phe will help us to imitate and learn nature, and bring new insights into understanding bionics. Meanwhile, it provides a new method for the synthesis of CaCO3 biomaterials with different crystal forms and morphologies.
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