Biomimetic Synthesis And Morphology Control Of Calcium Carbonate Materials

The inorganic structures formed by organisms provide a unique inspiration for materials design. The most immediately striking aspect of biomaterials is the range of truly exquisite and unique morphologies observed, which are frequently entirely disparate from their synthetic counterparts. Structurally, biomaterials are typically composite materials, being intimately associated with organic mac-romolecules, and are often hierarchically organized on a scale from angstroms to millimeters. Nature necessarily achieves this degree of control under ambient conditions, employing specially designed macromolecules to manipulate crystallization processes. The organic macromolecules are a vital component of the mineral, being involved in nucleation and growth conform, and definition of mechanical properties. In consequence, although precipitated under mild conditions, biomaterials often exhibit superior mechanical properties, which is particularly important when they are being exploited for skeletal roles. Clearly, nature has evolved mechanisms to influence crystal growth and morphology to a degree unparalleled in any in vitro environment, producing mineralized structures that are permeably optimized to their fruition with is an organism. Calcium carbonate is one of the most abundant biomaterials, and as such, has received considerable interest from many branches of science. In particular, the mechanical properties of these structures have long fascinated, and frequently exceed all expectation for such a traditionally poor engineering material as calcium carbonate. These properties derive from the composite character of CaCO3 biomatera-1s, and in particular the morphology of CaCO3. Thus, the emphasis in this paper will be placed on morphogenesis of CaCO3 in the light of biomimetic strategies. According to the general principles of biomineralization, we used many functional organic templates, which can efficiently interact with CaCO3 Crystal, to control the crystal form and the morphology of CaCO3. Many systematic studies of the influence of various experimental parameters, such as pH of solution, concentration of additives and CaCO3, temperature, aging time, Etc., on the morpho-logy and size of CaCO3 crystals are investigated. These as-prepared CaCO3 materials with unusual morphologies can be potentially, promising candidates for advanced materials due to the importance of shape and texture in determining properties of materials, and this research presented in this paper may provide new insights into the morphological control of CaCO3 particles and the preparation of CaCO3 microstructures.