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

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

Materials Science-Poland
Volume 39 (2021): Issue 2 (June 2021)
By:  and    
Open Access
|Nov 2021
Figures & tables

Figures & Tables

Table 1

Textural characteristics of synthesized alkaline-earth hydroxyapatite materials and Co2+ ion adsorption capacities in percentage.

SampleSBET (m2 g−1)aVt (cm3 g−1)bdp (nm)cCo2+ ion adsorption capacity (%)
Ba-HAp0.52160.00118.92316.03 ± 0.39
Sr-HAp1.38740.005716.531017.46 ± 0.79
Ca-HAp59.70000.11207.504656.84 ± 1.08

a BET surface area.

b Total pore volume by N2 adsorption at p/po = 0.99.

c Mean dp.

Ba-HAp, barium hydroxyapatite; BET, Brunauer–Emmett–Teller;

Ca-HAp, calcium hydroxyapatite; dp, pore diameter; Sr-HAp, strontium hydroxyapatite.

Fig. 1

Chemical distribution of cobalt ionic species in aqueous media as a function of pH.

Fig. 2

XRD patterns of synthesized alkaline-earth hydroxyapatite powders prepared via chemical precipitation method followed by calcination at 1,100°C: (A) Ba-HAp, (B) Sr-HAp, and (C) Ca-HAp. Ba-HAp, barium hydroxyapatite; Ca-HAp, calcium hydroxyapatite; Sr-HAp, strontium hydroxyapatite.

Fig. 3

N2 adsorption-desorption isotherms of (A) Ba-HAp, (B) Sr-HAp, and (C) Ca-HAp powders. Ba-HAp, barium hydroxyapatite, Ca-HAp, calcium hydroxyapatite; Sr-HAp, strontium hydroxyapatite.

Fig. 4

SEM micrographs at 5,000 × and EDXS analysis of (A) Ba-HAp, (B) Sr-HAp, and (C) Ca-HAp powders. Ba-HAp, barium hydroxyapatite; Ca-HAp, calcium hydroxyapatite; Sr-HAp, strontium hydroxyapatite.

Fig. 5

FTIR spectrum of (A) Ba-HAp, (B) Sr-HAp, and (C) Ca-HAp powders. Ba-HAp, barium hydroxyapatite; Ca-HAp, calcium hydroxyapatite; Sr-HAp, strontium hydroxyapatite.

DOI: https://doi.org/10.2478/msp-2021-0022 | Journal eISSN: 2083-134X (formerly 2083-124X) | Journal ISSN: 2083-1331
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Language: English
Page range: 252 - 264
Submitted on: May 19, 2021
Accepted on: Sep 20, 2021
Published on: Nov 10, 2021
Published by: Wroclaw University of Science and Technology
In partnership with: Paradigm Publishing Services
Keywords:
barium hydroxyapatite,
strontium hydroxyapatite,
calcium hydroxyapatite,
chemical precipitation synthesis,
Co2+ ion adsorption
Related subjects:
Materials sciences,
Materials sciences, other,
Nanomaterials,
Functional and smart materials,
Materials characterization and properties

© 2021 Francisco Granados-Correa, Juan Bonifacio-Martínez, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Volume 39 (2021): Issue 2 (June 2021)
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