- PII
- 10.31857/S0044457X22700155-1
- DOI
- 10.31857/S0044457X22700155
- Publication type
- Status
- Published
- Authors
- Volume/ Edition
- Volume 68 / Issue number 3
- Pages
- 393-400
- Abstract
- Substituted hydroxylapatites (HAs) containing various La3+ or Y3+ percentages were prepared. X‑ray powder diffraction, Four-transform IR spectroscopy, and optical spectroscopy verified the formation of substituted hydroxylapatites (La–HA and Y–HA). Inductively coupled plasma atomic emission spectrometry (ICP–AES) verified the presence of REE ions in the solids. Changes in the unit cell parameters of the prepared phases indicated that the REE ions substituted for Ca2+ ions in the hydroxylapatite structure. The lanthanum or yttrium percentage in precipitates increased in response to increasing REE salt concentration (within 1–5 wt %) in the initial solution as shown by chemical analysis; this brought about a decrease in the ratio Ca/P compared to the stoichiometric ratio (1.67). The solubility of the synthesized samples was studied, and it appeared that the cation-substituted hydroxylapatites were less soluble than undoped HA was.
- Keywords
- лантан и иттрий отношение Ca/P растворимость
- Date of publication
- 17.09.2025
- Year of publication
- 2025
- Number of purchasers
- 0
- Views
- 5
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