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1篇 您的检索式:作者名="Akbar Cham"
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1Characterization of single-crystal fluorapatite nanoparticles synthesized via mechanochemical method显示文摘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 (002) 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.Reza Ebrahimi-Kahrizsangi Bahman Nasiri-Tabrizi Akbar Cham 2011Particuology2011,9,5:3
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