Characterization of single-crystal fluorapatite nanoparticles synthesized via mechanochemical method--颗粒学报PARTICUOLOGY

Ebrahimi-Kahrizsangi, R., Nasiri-Tabrizi, B., & Chami, A. (2011). Characterization of single-crystal fluorapatite nanoparticles synthesized via mechanochemical method. Particuology, 9(5), 537–544. https://doi.org/10.1016/j.partic.2011.07.001

Characterization of single-crystal fluorapatite nanoparticles synthesized via mechanochemical method

Reza Ebrahimi-Kahrizsangi, Bahman Nasiri-Tabrizi^*, Akbar Chami

Materials Engineering Department, Najafabad Branch, Islamic Azad University, Najafabad, Isfahan, Iran

10.1016/j.partic.2011.07.001

Volume 9, Issue 5, October 2011, Pages 537-544

Received 3 June 2011, Revised 7 July 2011, Accepted 27 July 2011, Available online 23 September 2011.

E-mail: bahman_nasiri@hotmail.com

Highlights

Abstract

The synthesis of nanostructured fluorapatite (FA; Ca₁₀(PO₄)₆F₂) was explored from the starting materials of CaHPO₄, Ca(OH)₂, CaO, P₂O₅ and CaF₂ via a mechanochemical process. In this research, the suitability of using the mechanochemical process to prepare a high crystalline phase of FA was studied. The characterization and structural features of the synthesized powders were evaluated using powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), energy dispersive X-ray spectroscopy (EDX), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) techniques. The results from the structural studies indicate that the maximum lattice disturbance in the apatite structure after the mechanochemical process was at the (0 0 2) plane. Furthermore, the maximum particle size was below the crystallite size after 60 h of milling and subsequent thermal treatment at 600 °C for 1 h (heated up to 600 °C and kept for 1 h at this temperature). We determined that this method gives rise to the single-crystal FA with an average size in the range of 25 ± 5 to 29 ± 9 nm. The present findings suggest that the solid-state reaction and appropriate thermal process simultaneously lead to the formation of nanostructured FA with spheroidal shape.

Graphical abstract

Keywords

Fluorapatite; Single-crystal; Nanoparticles; Mechanochemical; Crystallinity

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