Novel morphologies and phase transformation of CaCO3 crystals formed in CDS and urea aqueous solution

Controlling the polymorph and morphology of CaCO3 crystals using surfactant mixtures

“…Compared with Refs. [10][11][12][13][14][15][16][17][18][19], the adsorption of the surfactant on the surface of the sample is different for the mixed cationic and anionic surfactants because of the electrostatic repulsive interactions and hydrophobic effects. The surface energy of the sample was changed by different adsorption of these surfactants.…”

“…Inspired by these results, scientists have attempted to fabricate CaCO 3 crystals with different morphologies and properties outside of biological organisms by mimicking the biomineralization processes. Different surfactants were used to direct CaCO 3 crystallization [10][11][12][13][14][15][16][17][18][19]. Meanwhile, the physical characteristics of mixed cationic and anionic surfactants have attracted much attention [20][21][22][23][24][25].…”

The Controllable Synthesis of Octadecahedral BiVO4 with Exposed {111} Facets

“…Therefore, this mild hydrolysis increases the pH value slowly and provides special solution conditions for some facets of crystal growth. Furthermore, the surfactant effects of urea hydrolysis have been used to assist the synthesis of some compounds with particular morphologies, such as Cu 2 (OH) 3 NO 3 , Ca 8 (HPO 4 ) 2 (PO 4 ) 4 · 5H 2 O, CaCO 3 , and TiO 2 . As the controlled release of hydroxy ions through the hydrolysis of urea increases the pH value, the nucleation rate of BiVO 4 in the solution can be controlled.…”

Investigation of calcium carbonate precipitated in the presence of alkanols

“…A great deal of the research with surfactants has involved the use of cationic or anionic surfactants or mixtures of both . Amphiphilic polymers, such as poly(oxyethylene)‐poly(oxypropylene)‐poly(oxyethylene) triblock copolymers (commercially known as Pluronics), which fall into the category of non‐ionic surfactants, have also been investigated in the same context.…”