Crystal growth of calcium carbonate with various morphologies in different amino acid systems

The multiple effects of amino acids on the early stages of calcium carbonate crystallization

“…Tremel and coworkers have shown that specific enantiomers cause phase stabilization in calcium carbonate mineralization with micro droplets [38]. Work by Xie and coworkers closely examines effects of specific L-form amino acids on calcite crystal morphology [39]. Very recently, Pokroy et al have revealed that all amino acids can get incorporated into a calcite host lattice causing distortions just like intracrystalline proteins [40].…”

Morphosynthesis of CaCO3 at different reaction temperatures and the effects of PDDA, CTAB, and EDTA on the particle morphology and polymorph stability

“…Literature resources provide a wide variety of organic additives employed in the morphosynthesis of CaCO 3 . Among these additives are some organic solvents in the presence of CTAB [8], PVP [9], soluble proteins extracted from nacre [10], PEG, PVA, CTAB, and PAA [11], using of amino acids [12], applying ethanol as a solvent [13], and others.…”

A Biomimetic Nano-Scale Aggregation Route for the Formation of Submicron-Size Colloidal Calcite Particles

“…Three major phenomenological features, excluding the amply described decomposition of urea by urease, should be relevant in order to determine this process: (i) the role of urease macromolecules in the nucleation of the solid phase (templating), and their subsequent interaction with the inorganic phase at the solidliquid interface, directing the growth of inorganic structures; (ii) the inhibitory effect of magnesium ions on the growth of nascent solids; and (iii) the subsequent aggregation of nanosize particles that governs the formation of submicron-size colloids. Available reports indicate that protein macromolecules initiate the solid-phase formation, and control the crystalline nature and morphology of inorganic precipitates (Falini et al, 1996;Feng et al, 2000;Sondi & Salopek-Sondi, 2004;Xie et al, 2005;Yamamoto et al, 2008). These phenomena are the consequence of physico-chemical interactions between the active functional groups of organic macromolecules at their surface with the "building components" (ions, complexes) of the forming solids.…”