The onset of spherulitic growth in crystallization of calcium carbonate

Beck, Ralf; Andreassen, Jens‐Petter

doi:10.1016/j.jcrysgro.2010.04.037

Cited by 80 publications

(66 citation statements)

References 41 publications

(57 reference statements)

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“…Aragonite crystals produced at 90°C furthermore support the statement that crystal branching increases when supersaturation is raised. Earlier investigations have shown that also the onset of spherulitic growth for the calcite polymorph can be induced by increasing the level of supersaturation [3]. However, in these studies, the effect of supersaturation could not be decoupled from the temperature.…”

Section: Effect Of Supersaturation and Temperaturementioning

confidence: 88%

“…In this case, however, the supersaturation with respect to the amorphous phase is so low (S 0,amorphous = 1.2) that the direct precipitation of crystalline phases is kinetically preferred. Beck et al [3] have earlier reported that aragonite branches to a higher degree in experiments performed at 30°C than at 90°C. This agrees well with the findings of this study.…”

Section: Effect Of Supersaturation and Temperaturementioning

confidence: 94%

“…While growth occurs by mechanisms such as spiral growth and polynuclear growth at low supersaturation, higher levels of supersaturation lead to spherulitic growth [27]. This switch from a polycrystalline to monocrystalline growth regime was also discussed [3] in connection with the domain size in the seeded growth experiments performed at different supersaturation levels, as referred in Fig. 6.…”

Section: Effect Of Supersaturation and Temperaturementioning

confidence: 99%

“…The vaterite polymorph of calcium carbonate usually exhibits polycrystalline features though it could be shown that it also can be grown as monocrystalline particles [19]. Beck et al [3] performed seeded semibatch experiments with vaterite seed particles that were crystallized at a supersaturation ratio of S 0,vaterite = 7.1 (Fig. 5).…”

Section: Category 1 (A)mentioning

confidence: 99%

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Influence of Crystallization Conditions on the Growth of Polycrystalline Particles

2011

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The effect of initial supersaturation and temperature on crystal morphology below and above the threshold for the onset of spherulitic growth has been compared for calcium carbonate, L-glutamic acid, and an aromatic amine derivative in aqueous systems. For the vaterite polymorph of calcium carbonate is has also been documented how spherulites (polycrystalline particles) develop with time in a solvent mixture of water and monoethylene glycol. For the three studied substances, the temperature was found to have different effects on the compactness of the crystals. The influence of supersaturation on the onset of spherulitic growth and particle morphology, however, bears striking similarities for the investigated substances. While monocrystalline particles are found at low supersaturation, polycrystalline particles form with increasing degree of branching when supersaturation is increased.

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Section: Effect Of Supersaturation and Temperaturementioning

confidence: 88%

Section: Effect Of Supersaturation and Temperaturementioning

confidence: 94%

Section: Effect Of Supersaturation and Temperaturementioning

confidence: 99%

Section: Category 1 (A)mentioning

confidence: 99%

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Influence of Crystallization Conditions on the Growth of Polycrystalline Particles

2011

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“…Despite ongoing debate (Kamhi, 1963;Wang and Becker, 2009;Kabalah-Amitai et al, 2013), the formation of vaterite and its transformation mechanisms among the polymorphs can be explained in terms of sequential dissolution and (re)crystallization processes (Figure 2) (Kralj et al, 1997;Spanos and Koutsoukos, 1998;Katsifaras and Spanos, 1999;Wei et al, 2003): (i) initially formed ACC particles transform to the least stable vaterite and (ii) the most soluble vaterite undergoes dissolution and crystallization finally forming the most stable calcite. The solubility of the CaCO3 polymorphs is in decreasing order of ACC, vaterite, aragonite, and calcite (Beck and Andreassen, 2010). It was revealed that the ACC transformation into vaterite and calcite can be dominantly found below 40°C, while aragonite can be stabilized at elevated temperature above 60°C (Ogino et al, 1987;Chen and Xiang, 2009;Trushina et al, 2014 , the former shows stronger ability to form hydrate.…”

Section: Molecular Mechanism and Polymorph Formation Of Cacomentioning

confidence: 98%

Calcium Carbonate Precipitation for CO2 Storage and Utilization: A Review of the Carbonate Crystallization and Polymorphism

et al. 2017

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The transformation of CO2 into a precipitated mineral carbonate through an ex situ mineral carbonation route is considered a promising option for carbon capture and storage (CCS) since (i) the captured CO2 can be stored permanently and (ii) industrial wastes (i.e., coal fly ash, steel and stainless-steel slags, and cement and lime kiln dusts) can be recycled and converted into value-added carbonate materials by controlling polymorphs and properties of the mineral carbonates. The final products produced by the ex situ mineral carbonation route can be divided into two categories-low-end high-volume and high-end low-volume mineral carbonates-in terms of their market needs as well as their properties (i.e., purity). Therefore, it is expected that this can partially offset the total cost of the CCS processes. Polymorphs and physicochemical properties of CaCO3 strongly rely on the synthesis variables such as temperature, pH of the solution, reaction time, ion concentration and ratio, stirring, and the concentration of additives. Various efforts to control and fabricate polymorphs of CaCO3 have been made to date. In this review, we present a summary of current knowledge and recent investigations entailing mechanistic studies on the formation of the precipitated CaCO3 and the influences of the synthesis factors on the polymorphs.

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Polyamines Promote Aragonite Nucleation and Generate Biomimetic Structures

et al. 2022

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Calcium carbonate biomineralization is remarkable for the ability of organisms to produce calcite or aragonite with perfect fidelity, where this is commonly attributed to specific anionic biomacromolecules. However, it is proven difficult to mimic this behavior using synthetic or biogenic anionic organic molecules. Here, it is shown that cationic polyamines ranging from small molecules to large polyelectrolytes can exert exceptional control over calcium carbonate polymorph, promoting aragonite nucleation at extremely low concentrations but suppressing its growth at high concentrations, such that calcite or vaterite form. The aragonite crystals form via particle assembly, giving nanoparticulate structures analogous to biogenic aragonite, and subsequent growth yields stacked aragonite platelets comparable to structures seen in developing nacre. This mechanism of polymorph selectivity is captured in a theoretical model based on these competing nucleation and growth effects and is completely distinct from the activity of magnesium ions, which generate aragonite by inhibiting calcite. Profiting from these contrasting mechanisms, it is then demonstrated that polyamines and magnesium ions can be combined to give unprecedented control over aragonite formation. These results give insight into calcite/aragonite polymorphism and raise the possibility that organisms may exploit both amine-rich organic molecules and magnesium ions in controlling calcium carbonate polymorph.

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The onset of spherulitic growth in crystallization of calcium carbonate

Cited by 80 publications

References 41 publications

Influence of Crystallization Conditions on the Growth of Polycrystalline Particles

Influence of Crystallization Conditions on the Growth of Polycrystalline Particles

Calcium Carbonate Precipitation for CO2 Storage and Utilization: A Review of the Carbonate Crystallization and Polymorphism

Polyamines Promote Aragonite Nucleation and Generate Biomimetic Structures

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