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Citation: CHEN Xian-Yong, TANG Qin, HU Wei-Bing. Biomimetic Synthesis of Uniform Large Particles of Spherial Calcium Carbonate[J]. Chinese Journal of Applied Chemistry, ;2009, 26(5): 562-565. shu

Biomimetic Synthesis of Uniform Large Particles of Spherial Calcium Carbonate

1.
Department of Chemical and Environmental Engineering, Hubei Institute for Nationalities, Enshi 445000

Corresponding author: CHEN Xian-Yong,
Received Date: 15 April 2008
Available Online: 20 July 2008
Fund Project: 湖北省教育厅项目(B200729005) (B200729005)湖北民族学院青年重点科研项目(2005LD0013) (2005LD0013)湖北省国际科技合作项目(2006CA014) (2006CA014)

Based on the principles of biomineralization,uniform large particles of spherial calcium carbonate were prepared using sodium citrate as the template and insoluble calcium sulphate as the raw material.The obtained calcium carbonate samples were characterized by X-ray diffraction(XRD),Fourier transform infrared spectrometry(FTIR),scanning electron microscopy(SEM),and tbermogravimetry analysis(TGA).The crystal morphology of the calcium carbonate was controlled by sodium citrate.When the concentration of the sodium citrate was 0.9%(mass fraction),product with uniform large particles of a mean size of 10~15 μm and narrow size distribution and good dispersivity was synthesized.The growth mechanism of CaCO₃ was also discussed.
- calcium sulphate,
- sodium citrate,
- biomimetic synthesis,
- calcium carbonate
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