TY  - JOUR
AU  - Jokić, Bojan M.
AU  - Mitrić, Miodrag
AU  - Radmilović, Velimir
AU  - Drmanic, Sasa
AU  - Petrović, Rada
AU  - Janaćković, Đorđe T.
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4187
AB  - High temperature hydrothermal syntheses, using calcium nitrate tetrahydrate, sodium dihydrogen phosphate and urea as precursors, and characterization of hydroxyapatite (HAp) whiskers are reported herein. The morphology and chemical composition of the crystals from a monetite to a hydroxyapatite phase were controlled by varying the starting concentrations of the precursors and the solution pH through the amount of urea that is decomposed during heating. X-ray diffraction (XRD) analysis, infrared spectroscopy (IR), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM) and high-resolution TEM (HRTEM) were used to investigate the products of the syntheses in order to find the optimum reaction conditions for obtaining the desired morphology and phase composition. Different morphologies ranging from single crystals of monetite through rods and plates of hydroxyapatite with different size distribution to whisker-like single hydroxyapatite crystal were achieved by simply varying the starting concentration of urea. Structural refinement of the hydroxyapatite whiskers confirmed a strong preferential orientation along the c-axis direction of the hexagonal crystal structure, which was significantly different from the usually observed random crystal orientation. TEM and SEM analysis of the apatite whiskers confirmed single crystal structure with the a c-axis orientation parallel to the long axis of the whiskers, with sizes up to 150 mu m in length, 10 mu m in width and with a thickness of about 300 nm, that grew from the same centre of nucleation, forming flaky-like particles. (C) 2010 Elsevier Ltd and Techna Group Sri. All rights reserved.
T2  - Ceramics International
T1  - Synthesis and characterization of monetite and hydroxyapatite whiskers obtained by a hydrothermal method
VL  - 37
IS  - 1
SP  - 167
EP  - 173
DO  - 10.1016/j.ceramint.2010.08.032
ER  - 

@article{
author = "Jokić, Bojan M. and Mitrić, Miodrag and Radmilović, Velimir and Drmanic, Sasa and Petrović, Rada and Janaćković, Đorđe T.",
year = "2011",
abstract = "High temperature hydrothermal syntheses, using calcium nitrate tetrahydrate, sodium dihydrogen phosphate and urea as precursors, and characterization of hydroxyapatite (HAp) whiskers are reported herein. The morphology and chemical composition of the crystals from a monetite to a hydroxyapatite phase were controlled by varying the starting concentrations of the precursors and the solution pH through the amount of urea that is decomposed during heating. X-ray diffraction (XRD) analysis, infrared spectroscopy (IR), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM) and high-resolution TEM (HRTEM) were used to investigate the products of the syntheses in order to find the optimum reaction conditions for obtaining the desired morphology and phase composition. Different morphologies ranging from single crystals of monetite through rods and plates of hydroxyapatite with different size distribution to whisker-like single hydroxyapatite crystal were achieved by simply varying the starting concentration of urea. Structural refinement of the hydroxyapatite whiskers confirmed a strong preferential orientation along the c-axis direction of the hexagonal crystal structure, which was significantly different from the usually observed random crystal orientation. TEM and SEM analysis of the apatite whiskers confirmed single crystal structure with the a c-axis orientation parallel to the long axis of the whiskers, with sizes up to 150 mu m in length, 10 mu m in width and with a thickness of about 300 nm, that grew from the same centre of nucleation, forming flaky-like particles. (C) 2010 Elsevier Ltd and Techna Group Sri. All rights reserved.",
journal = "Ceramics International",
title = "Synthesis and characterization of monetite and hydroxyapatite whiskers obtained by a hydrothermal method",
volume = "37",
number = "1",
pages = "167-173",
doi = "10.1016/j.ceramint.2010.08.032"
}

Jokić, B. M., Mitrić, M., Radmilović, V., Drmanic, S., Petrović, R.,& Janaćković, Đ. T.. (2011). Synthesis and characterization of monetite and hydroxyapatite whiskers obtained by a hydrothermal method. in Ceramics International, 37(1), 167-173.
https://doi.org/10.1016/j.ceramint.2010.08.032

Jokić BM, Mitrić M, Radmilović V, Drmanic S, Petrović R, Janaćković ĐT. Synthesis and characterization of monetite and hydroxyapatite whiskers obtained by a hydrothermal method. in Ceramics International. 2011;37(1):167-173.
doi:10.1016/j.ceramint.2010.08.032 .

Jokić, Bojan M., Mitrić, Miodrag, Radmilović, Velimir, Drmanic, Sasa, Petrović, Rada, Janaćković, Đorđe T., "Synthesis and characterization of monetite and hydroxyapatite whiskers obtained by a hydrothermal method" in Ceramics International, 37, no. 1 (2011):167-173,
https://doi.org/10.1016/j.ceramint.2010.08.032 . .