Thứ bảy, 10/01/2026 | 11:22
Abstract In this paper, the effects of hydrothermal and calcination conditions on the structure of nano-hydroxyapatite synthesized from Thunnus tonggol bone were studied. The characteristics of samples were determined by various techniques such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), and optical X-ray fluorescence spectroscopy (XRF). XRD results showed that the hydrothermal and calcination conditions affect the crystallinity and purity of nano-hydroxyapatite product. The suitable conditions for the synthesis of nano-hydroxyapatite have been proposed such as hydrothermal at 120°C in 7 hours and calcination at 800°C in 1 hour. Under the conditions, the hydroxyapatite had the nanoparticle size in a range of 30–100 nm, and reached a BET surface area of 15.8 m2/g, a pore volume of 0.018 cm3/g, and a pore diameter of 23.0 Å. The molar ratio of Ca/P in the nano-hydroxyapatite was 1.67, which would be the expected ratio for hydroxyapatite. The nano-hydroxyapatite product has high crystallinity and biological compatibility when tested in Simulated Body Fluid (SBF). Keywords: nano-hydroxyapatite, Thunnus tonggol, biocompatibility, fish bone |
Sau một năm triển khai Nghị quyết số 57-NQ/TW của Bộ Chính trị, những chuyển động bước đầu cho thấy tinh thần đồng tốc trong chỉ đạo, đồng lòng trong tổ chức thực hiện. Nghị quyết 57 đang được cụ thể hóa bằng thể chế, nguồn lực và các kết quả có thể đo đếm.
06/01/2026