The self-assembly of CaCO3 crystals in the presence of protein

Yang, Huayan; Yao, Wenguang; Ma, Xiaoming; Wang, Huajie; Feng, Yang; Wong, Kawai

doi:10.1016/j.jcrysgro.2009.02.049

Cited by 36 publications

(25 citation statements)

References 62 publications

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“…3 The nature of the precipitate will depend on the reaction conditions; presence of additives or seeds that, in turn, may influence the growth mechanism; self-assembly; crystallographic phase; shape; size; and internal structure of the particles. [4][5][6][7][8] Calcium carbonate, in addition to being an important material for industrial applications, is also present in many living organisms, which has also led to much work on the growth mechanisms that give the very particular morphologies observed in nature. [9][10][11][12] In the current study, the precipitation of calcium carbonate from relatively concentrated solutions (0.02 M) involves the formation of an initial "precursor" gel phase which, without the use of seeds, transforms into a mixture of both calcite and or vaterite, [13][14][15] even in the presence of polyacrylic acids.…”

Section: Introductionmentioning

confidence: 99%

Contribution of Aggregation to the Growth Mechanism of Seeded Calcium Carbonate Precipitation in the Presence of Polyacrylic Acid

et al. 2010

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Our work investigates the precipitation mechanism of a seeded calcium carbonate reaction, by using cryogenic TEM to observe the early stages of the reaction. The early precipitation of a hydrated phase is proposed as an intermediate phase before transformation into calcite. Thermodynamic modeling in conjunction with pH, surface potential measurements, and colloidal stability modeling demonstrate that calcite growth is dominated by agglomeration. This is in agreement with the cryogenic TEM observations, which suggest oriented attachment dominates early aggregation. The final stage of the reaction is described by a ripening mechanism that is significantly inhibited when high concentrations of polyacrylic acid (PAA) are used. The different concentrations of PAA lead to significant differences in the final particle substructure observed using cross section TEM. At low PAA concentrations, single crystal particles result, coherent with the proposed early oriented attachment mechanism and interfacial energy calculations. A core shell model is proposed for high PAA concentrations, whereas internal ripening of nanosized pores has been observed for low PAA concentrations, suggesting trapped solvent during the rapid initial particle formation at the relatively high supersaturations (S ) 30) investigated.

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Section: Introductionmentioning

confidence: 99%

Contribution of Aggregation to the Growth Mechanism of Seeded Calcium Carbonate Precipitation in the Presence of Polyacrylic Acid

et al. 2010

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“…Many materials have been widely chosen to control the phase and morphology of calcium carbonate to form laminated structures, including Langmuir monolayer [8][9][10], self-assembled films [11], double-hydrophilic block copolymers [12], macromolecules [13,14], and low molecular weight compound [15,16]. Detailed studies have been performed on the formation of laminate structure of calcium carbonate crystallization in an attempt to mimic the formation of the nacreous layers of calcium carbonate in mollusk shells that grew on organic matrix.…”

Section: Introductionmentioning

confidence: 99%

Hen eggwhite-mediated stack crystallization of calcium carbonate

Zhou

et al. 2010

Journal of Crystal Growth

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“…When [Ca 2+ ] = 0.5 mol/l, a large amount of homogeneous, hexahedral CaCO 3 crystal particles about 10 m in diameter were accumulated by regular plate-like structures with smooth surface (Figures 11(A-2) and 11(B-2)). The surface of some CaCO 3 crystals was composed of small "flying disk"-shaped particles, and their morphology was analogous to the CaCO 3 crystals synthesised by Yang et al [24].…”

Section: Influence Of Camentioning

confidence: 70%

Mineralization Process of Biocemented Sand and Impact of Bacteria and Calcium Ions Concentrations on Crystal Morphology

Tang

Lian

et al. 2017

Advances in Materials Science and Engineering

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Microbial-induced calcite precipitation (MICP) is a sustainable technique used to improve sandy soil. Analysis of the mineralization process, as well as different bacterial suspensions and calcium concentrations on the crystal morphology, revealed that the mineralization process included four stages: self-organised hydrolysis of microorganisms, molecular recognition and interface interaction, growth modulation, and epitaxial growth. By increasing bacterial suspensions and calcium concentrations, the crystal morphology changed from hexahedron to oblique polyhedron to ellipsoid; the best crystal structure occurs at OD 600 = 1.0 and [Ca 2+ ] = 0.75 mol/l. It should be noted that interfacial hydrogen bonding is the main force that binds the loose sand particles. These results will help in understanding the mechanism of MICP.

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The self-assembly of CaCO3 crystals in the presence of protein

Cited by 36 publications

References 62 publications

Contribution of Aggregation to the Growth Mechanism of Seeded Calcium Carbonate Precipitation in the Presence of Polyacrylic Acid

Contribution of Aggregation to the Growth Mechanism of Seeded Calcium Carbonate Precipitation in the Presence of Polyacrylic Acid

Hen eggwhite-mediated stack crystallization of calcium carbonate

Mineralization Process of Biocemented Sand and Impact of Bacteria and Calcium Ions Concentrations on Crystal Morphology

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