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McDonogh, D.P.; Kirupananthan, P.; Gebauer, D.: Counterintuitive Crystallization: Rate Effects in Calcium Phosphate Nucleation at Near-Physiological pH. In: Crystal Growth & Design 23 (2023), Nr. 10, S. 7037-7043. DOI: https://doi.org/10.1021/acs.cgd.3c00851
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Sum total of downloads: 3
| Abstract: | |
Calcium phosphates are widely present in geological and industrial settings and make up the majority of our bone’s inorganic content; however, their formation from solution is not fully understood. The nucleation of calcium phosphate phases was studied using a state-of-the-art titration setup. The effect of varied calcium addition rate was studied at a range of pH values between pH 7 and pH 8; the precipitated crystals were isolated and analyzed. Dicalcium phosphate dihydrate (DCPD) was formed at lower pH and a slow addition rate. Intermediate addition rates yielded a mix of DCPD and poorly crystalline hydroxyapatite (PC-HA). At fast addition rates and above pH 7.5, poorly crystalline hydroxyapatite was precipitated exclusively. The results indicate that counterintuitive kinetic effects play a substantial role in the nucleation of calcium phosphates. | |
| License of this version: | CC BY 4.0 Unported |
| Document Type: | Article |
| Publishing status: | publishedVersion |
| Issue Date: | 2023 |
| Appears in Collections: | Naturwissenschaftliche Fakultät |
distribution of downloads over the selected time period:
downloads by country:
| pos. | country | downloads | ||
|---|---|---|---|---|
| total | perc. | |||
| 1 |  |
Germany | 2 | 66.67% |
| 2 |  |
United States | 1 | 33.33% |
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