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- W4317503530 endingPage "418" @default.
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- W4317503530 abstract "Mesoporous hydroxyapatite (HA) materials demonstrate advantages as catalysts and as support systems for catalysis, as adsorbent materials for removing contamination from soil and water, and as nanocarriers of functional agents for bone-related therapies. The present research demonstrates the possibility of the enlargement of the Brunauer-Emmett-Teller specific surface area (SSA), pore volume, and average pore diameter via changing the synthesis medium and ripening the material in the mother solution after the precipitation processes have been completed. HA powders were investigated via chemical analysis, X-ray diffraction analysis, Fourier-transform IR spectroscopy, transmission electron microscopy (TEM), and scanning (SEM) electron microscopy. Their SSA, pore volume, and pore-size distributions were determined via low-temperature nitrogen adsorption measurements, the zeta potential was established, and electron paramagnetic resonance (EPR) spectroscopy was performed. When the materials were synthesized in water-ethanol and water-acetone media, the SSA and total pore volume were 52.1 m2g-1 and 116.4 m2g-1, and 0.231 and 0.286 cm3g-1, respectively. After ripening for 21 days, the particle morphology changed, the length/width aspect ratio decreased, and looser and smaller powder agglomerates were obtained. These changes in their characteristics led to an increase in SSA for the water and water-ethanol samples, while pore volume demonstrated a multiplied increase for all samples, reaching 0.593 cm3g-1 for the water-acetone sample." @default.
- W4317503530 created "2023-01-20" @default.
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- W4317503530 date "2023-01-19" @default.
- W4317503530 modified "2023-10-01" @default.
- W4317503530 title "Effects of Various Ripening Media on the Mesoporous Structure and Morphology of Hydroxyapatite Powders" @default.
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- W4317503530 doi "https://doi.org/10.3390/nano13030418" @default.
- W4317503530 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36770379" @default.
- W4317503530 hasPublicationYear "2023" @default.