Biomimetic interfacial assembly of CaCO₃ microspheres using egg-white foam and their interaction with Sr²⁺

Author:

Zheng Qiao  Xun Liu  Xiaohui Duan  Yong Zhou  Chonghua Pei  Yongjun Ma  

Journal:

Ceramics International

Issue Date:

2017

Abstract(summary):

Abstract Since egg-white protein is an excellent amphoteric surfactant and an outstanding regulator of CaCO 3 mineralization, we prepared an egg-white foam as the organic matrix and template to regulate mineralization of CaCO 3 and assemble primary mineralization particles. Samples were characterized by scanning electron microscopy, powder X-ray diffraction, Fourier transform infrared spectroscopy and high-resolution transmission electron microscopy, showing that the particles are homogeneous (2 µm) vaterite spherules of CaCO 3 . The results of the interaction between the particles and Sr 2+ show that Sr 2+ can induce transformation of the particles from vaterite to calcite and that it is simultaneously adsorbed by the particles, reaching 89.9% adsorption after 36 h.

Page:

12870-12870