Biomimetic synthesis of calcium carbonate under phenylalanine: Control of polymorph and morphology
| Autor: | Liang Ma, Xiaoqing Yue, Cuiyan Wang, Bosheng Zhao, Jilagamazhi Fu, Tingyu Yang, Hong Du |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Phenylalanine Bioengineering 02 engineering and technology 010402 general chemistry 01 natural sciences law.invention Calcium Carbonate Biomaterials Crystal chemistry.chemical_compound X-Ray Diffraction law Biomimetics Vaterite Fourier transform infrared spectroscopy Crystallization High-resolution transmission electron microscopy Calcite 021001 nanoscience & nanotechnology 0104 chemical sciences Calcium carbonate chemistry Chemical engineering Mechanics of Materials Microscopy Electron Scanning 0210 nano-technology Biomineralization |
| Zdroj: | Materials scienceengineering. C, Materials for biological applications. 114 |
| ISSN: | 1873-0191 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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