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Ammonium-to-sodium ion-exchange process at the interlayer of octacalcium phosphate.

ABSTRACT: Octacalcium phosphate (OCP) has been considered as the layer component of calcium phosphate, but whether it achieves the ionic-exchange ability of conventional layer components is unclear. As OCP is highly biocompatible, understanding its ionic-exchange properties would potentially expand its pharmaceutical and medical applications. Herein, we demonstrate that the substituted cations in ammonium (NH₄)-substituted octacalcium phosphate (OCP-NH₄) and sodium (Na)-containing ammonium phosphate solutions undergo ion exchanges with OCP interlayers. Replacing NH₄ ⁺ with Na⁺ did not alter the crystal structure of OCP, confirming that a substituted cation exchange process similar to that in other layered compounds occurs in OCP.

SUBMITTER: Sugiura Y

PROVIDER: S-EPMC9044421 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature

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Ammonium-to-sodium ion-exchange process at the interlayer of octacalcium phosphate.

Sugiura Yuki Y Makita Yoji Y Horie Masanori M

RSC advances 20211213 62

Octacalcium phosphate (OCP) has been considered as the layer component of calcium phosphate, but whether it achieves the ionic-exchange ability of conventional layer components is unclear. As OCP is highly biocompatible, understanding its ionic-exchange properties would potentially expand its pharmaceutical and medical applications. Herein, we demonstrate that the substituted cations in ammonium (NH<sub>4</sub>)-substituted octacalcium phosphate (OCP-NH<sub>4</sub>) and sodium (Na)-containing am ...[more]

PMID: 35492470

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