SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2023, Vol. 59 ›› Issue (7): 146-152.DOI: 10.1016/j.cjche.2023.01.004

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Crystalline-magnetism action in biomimetic mineralization of calcium carbonate

Chaoqun Wu1, Xun Liu1, Fujun Yao1, Xin Yang1, Yan Wang1, Wenyuan Hu2,3   

  1. 1. State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621000, China;
    2. Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621000, China;
    3. National Health Commission Key Laboratory of Nuclear Technology Medical Transformation, Mianyang Central Hospital, Mianyang 621010, China
  • Received:2022-03-24 Revised:2023-01-09 Online:2023-10-14 Published:2023-07-28
  • Contact: Xun Liu,E-mail:liuxun@swust.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (12272329), the Sichuan University Student Innovation and Entrepreneurship Training Program (S202110619066), the Project of State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology (No.20fksy18), the Undergraduate Innovation Fund Project by Southwest University of Science and Technology (CX21-098) and the NHC Key Laboratory of Nuclear Technology Medical Transformation (Mianyang Central Hospital) (21HYX019).

Crystalline-magnetism action in biomimetic mineralization of calcium carbonate

Chaoqun Wu1, Xun Liu1, Fujun Yao1, Xin Yang1, Yan Wang1, Wenyuan Hu2,3   

  1. 1. State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621000, China;
    2. Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621000, China;
    3. National Health Commission Key Laboratory of Nuclear Technology Medical Transformation, Mianyang Central Hospital, Mianyang 621010, China
  • 通讯作者: Xun Liu,E-mail:liuxun@swust.edu.cn
  • 基金资助:
    This work was supported by the National Natural Science Foundation of China (12272329), the Sichuan University Student Innovation and Entrepreneurship Training Program (S202110619066), the Project of State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology (No.20fksy18), the Undergraduate Innovation Fund Project by Southwest University of Science and Technology (CX21-098) and the NHC Key Laboratory of Nuclear Technology Medical Transformation (Mianyang Central Hospital) (21HYX019).

Abstract: The influence of minor environmental factors, such as the geomagnetic field, on the biomineralization of nacres, is often ignored but a great deal of research has confirmed its important role in the normal mineralization of calcium carbonate. Although the geomagnetic field is weak, its cumulative effects need to be considered given that the biomineralization process can take years. Accordingly, the authors of this paper have investigated the effects of weak magnetic fields (25 Gs or 50 Gs) on calcium carbonate mineralization and analyzed the mechanism involved. The results show that even a weak magnetic field conduces to the formation of vaterite or aragonite, in the induction order of precursor → vaterite → aragonite. The stronger the magnetic field and the longer the time, the more obvious the induction effect. The effect of a magnetic field is strongest in the aging stage and weakest in the solution stage. Inductions by egg-white protein and by a magnetic field inhibit each other, but they both restrict particle growth. These findings highlight the importance of minor environmental factors for biomineralization and can serve as a reference for biomimetic preparation of a CaCO3 nacre-like structure and for anti-scale technology for circulating cooling water.

Key words: Biomimetic mineralization, Calcium carbonate, Magnetic field, Egg-white protein

摘要: The influence of minor environmental factors, such as the geomagnetic field, on the biomineralization of nacres, is often ignored but a great deal of research has confirmed its important role in the normal mineralization of calcium carbonate. Although the geomagnetic field is weak, its cumulative effects need to be considered given that the biomineralization process can take years. Accordingly, the authors of this paper have investigated the effects of weak magnetic fields (25 Gs or 50 Gs) on calcium carbonate mineralization and analyzed the mechanism involved. The results show that even a weak magnetic field conduces to the formation of vaterite or aragonite, in the induction order of precursor → vaterite → aragonite. The stronger the magnetic field and the longer the time, the more obvious the induction effect. The effect of a magnetic field is strongest in the aging stage and weakest in the solution stage. Inductions by egg-white protein and by a magnetic field inhibit each other, but they both restrict particle growth. These findings highlight the importance of minor environmental factors for biomineralization and can serve as a reference for biomimetic preparation of a CaCO3 nacre-like structure and for anti-scale technology for circulating cooling water.

关键词: Biomimetic mineralization, Calcium carbonate, Magnetic field, Egg-white protein