Hierarchical CaCO3 Structure

Hierarchical CaCO3 Structure

Author: David Bradley

Porous and hierarchical materials have potential in catalysis, separations, drug delivery and sensor technology. Creating calcium carbonate with such a structure might also have benefits in bone reconstruction and materials science. By using a poly(ethylene glycol)-b-poly(aspartic acid) (PEG-b-pAsp) block copolymer in a mixed solvent of N,N-dimethylformamide (DMF) and cyclohexanol, researchers in China have been able to control the crystal growth of such particles.

Surface area, porosity and particle size (tens to hundreds of nanometers) can be fine-tuned by altering the solvent ratio.

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