Conclusion
The nucleation and growth of crystalline carbonate materials(4, 5) are matrix-mediated from the matrices (ca. 40-μm thick) of mesoporous poly(γ-aminopropyl triethoxysilane) (PAPS), where CO2 (0.03% v/v) from air is utilized as a carbon source in the mineralization process under relative humidity of 50∼60%. A catalytic cycle via the reproduction of carbamate (−NHCO2 −) intermediate8 is proposed for the mineralization mechanism for growing thefloral andtubular shapes of crystalline carbonate assemblies(4, 5) at each air interface of the matrices of MOH-catalyzed PAPS, M+/PAPS (M = Na+ and K+). This mechanism would give rise to novel crystallization strategies for producing hierarchically structured materials.
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Cho, E.J., Jeong, E.D., Ha, MG. et al. Morphogenesis of crystalline carbonates self-assembled on polyaminosiloxane. Macromol. Res. 16, 663–665 (2008). https://doi.org/10.1007/BF03218577
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DOI: https://doi.org/10.1007/BF03218577