Controllable synthesis of calcium carbonate polymorphs at different temperatures

Abstract Calcium carbonate with various structures and morphologies were prepared by double injection of the CaCl2 and NH4HCO3 solutions with molar ratio of 1:1 at 30-80 °C. The lamellar vaterite particles, the mixture composed of vaterite, aragonite and calcite, and the aragonite whiskers were formed at 30-40 °C, 50-70 °C and 80 °C, respectively. Thermodynamic calculation showed that the value of [CO32−]/[Ca2+] decreased with the increase of temperature, which may be one of the reasons for the formation of the lamellar vaterite at 30-40 °C and the aragonite whiskers at 80 °C.

[1]  N. Vagenas,et al.  Calcium carbonate phase analysis using XRD and FT-Raman spectroscopy , 2000 .

[2]  Shuhong Yu,et al.  Polymorph Discrimination of CaCO3 Mineral in an Ethanol/Water Solution: Formation of Complex Vaterite Superstructures and Aragonite Rods. , 2006 .

[3]  C. Y. Tai,et al.  Polymorphism of CaCO3, precipitated in a constant‐composition environment , 1998 .

[4]  P. Koutsoukos,et al.  Quantitative analysis of calcium carbonate polymorphs by infrared spectroscopy , 1989 .

[5]  M. Kitamura.  Crystallization and Transformation Mechanism of Calcium Carbonate Polymorphs and the Effect of Magnesium Ion. , 2001, Journal of colloid and interface science.

[6]  Y. Qian,et al.  Solvothermal growth of vaterite in the presence of ethylene glycol, 1,2-propanediol and glycerin , 2002 .

[7]  Shuhong Yu,et al.  Polymorph Discrimination of CaCO3 Mineral in an Ethanol/Water Solution: Formation of Complex Vaterite Superstructures and Aragonite Rods , 2006 .

[8]  F. Meldrum,et al.  Study of Calcium Carbonate Precipitation under a Series of Fatty Acid Langmuir Monolayers Using Brewster Angle Microscopy , 2003 .

[9]  R. Clemente,et al.  Rhombohedral-scalenohedral calcite transition produced by adjusting the solution electrical conductivity in the system Ca(OH)2-CO2-H2O. , 2003 .

[10]  H. Choi,et al.  Nanoparticle-Directed Crystallization of Calcium Carbonate , 2001 .

[11]  W. Tremel,et al.  Templated Growth of Calcite, Vaterite, and Aragonite Crystals on Self-Assembled Monolayers of Substituted Alkylthiols on Gold , 1998 .

[12]  F. Meldrum,et al.  The role of magnesium in stabilising amorphous calcium carbonate and controlling calcite morphologies , 2003 .

[13]  N. Wada,et al.  Effects of divalent cations upon nucleation, growth and transformation of calcium carbonate polymorphs under conditions of double diffusion , 1995 .

[14]  E. Dalas,et al.  Spontaneous precipitation of calcium carbonate in the presence of ethanol, isopropanol and diethylene glycol , 2000 .

[15]  P. K. Ajikumar,et al.  Controlled Deposition of Thin Films of Calcium Carbonate on Natural and Synthetic Templates , 2004 .

[16]  F. Wei,et al.  Formation of CaCO3 nanoparticles in the presence of terpineol , 2004 .

[17]  Wang,et al.  Preparation of Uniform Needle-Like Aragonite Particles by Homogeneous Precipitation. , 1999, Journal of colloid and interface science.

[18]  S. Mann,et al.  MORPHOSYNTHESIS OF CALCIUM CARBONATE (VATERITE) MICROSPONGES , 1999 .

[19]  L. Qi,et al.  Biomimetic Morphogenesis of Calcium Carbonate in Mixed Solutions of Surfactants and Double‐Hydrophilic Block Copolymers , 2002 .