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This work addresses the synthesis of nanocrystalline barium, strontium, and calcium hydroxyapatites (Ca-HAps) via the chemical precipitation method, followed by calcination. To give a coherent picture of the most important structural, textural, and morphological properties of these materials and to investigate the influence of these characteristics over Co2+ ion adsorption capacity from aqueous solutions, the powders prepared were systematically characterized by X-ray diffraction, N2-physisorption measurements, scanning electron microscopy (SEM), energy dispersive X-ray spectrometry, and Fourier Transformed Infrared spectroscopy (FTIR). The results clearly showed that the Ca-HAp obtained exhibits better nanocrystallinity, greater structural stability, high surface area, high total pore volume, and mesoporosity, compared with the other synthesized hydroxyapatites, and that these physicochemical properties share a direct correlation with favorable Co2+ ion adsorption capacity at room temperature and pressure. The results proved that the physicochemical features of resulting alkaline-earth hydroxyapatites, prepared via the chemical precipitation method, played a fundamental role during the adsorption of heavy metal (with high toxicity) from aqueous solutions.
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This work addresses the synthesis of nanocrystalline barium, strontium, and calcium hydroxyapatites (Ca-HAps) via the chemical precipitation method, followed by calcination. To give a coherent picture of the most important structural, textural, and morphological properties of these materials and to investigate the influence of these characteristics over Co2+ ion adsorption capacity from aqueous solutions, the powders prepared were systematically characterized by X-ray diffraction, N2-physisorption measurements, scanning electron microscopy (SEM), energy dispersive X-ray spectrometry, and Fourier Transformed Infrared spectroscopy (FTIR). The results clearly showed that the Ca-HAp obtained exhibits better nanocrystallinity, greater structural stability, high surface area, high total pore volume, and mesoporosity, compared with the other synthesized hydroxyapatites, and that these physicochemical properties share a direct correlation with favorable Co2+ ion adsorption capacity at room temperature and pressure. The results proved that the physicochemical features of resulting alkaline-earth hydroxyapatites, prepared via the chemical precipitation method, played a fundamental role during the adsorption of heavy metal (with high toxicity) from aqueous solutions.

Synthetic alkaline-earth hydroxyapatites: Influence of their structural, textural, and morphological properties over Co2+ ion adsorption capacity

Materials Science-Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Synthetic alkaline-earth hydroxyapatites: Influence of their structural, textural, and morphological properties over Co ion adsorption capacity

This work addresses the synthesis of nanocrystalline barium, strontium, and calcium hydroxyapatites (Ca-HAps) via the chemical precipitation method, followed...

Synthetic alkaline-earth hydroxyapatites: Influence of their structural, textural, and morphological properties over Co²⁺ ion adsorption capacity

Published Online: Nov 10, 2021

Page range: 252 - 264

Received: May 19, 2021

Accepted: Sep 20, 2021

DOI: https://doi.org/10.2478/msp-2021-0022

Keywords
barium hydroxyapatite, strontium hydroxyapatite, calcium hydroxyapatite, chemical precipitation synthesis, Co ion adsorption

© 2021 Francisco Granados-Correa et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Synthetic alkaline-earth hydroxyapatites: Influence of their structural, textural, and morphological properties over Co2+ ion adsorption capacity

Published Online: Nov 10, 2021

Page range: 252 - 264

Received: May 19, 2021

Accepted: Sep 20, 2021

DOI: https://doi.org/10.2478/msp-2021-0022

Keywordsbarium hydroxyapatite, strontium hydroxyapatite, calcium hydroxyapatite, chemical precipitation synthesis, Co ion adsorption

© 2021 Francisco Granados-Correa et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Synthetic alkaline-earth hydroxyapatites: Influence of their structural, textural, and morphological properties over Co²⁺ ion adsorption capacity

Keywords
barium hydroxyapatite, strontium hydroxyapatite, calcium hydroxyapatite, chemical precipitation synthesis, Co ion adsorption