Novel and facile microwave-assisted synthesis of Mo-doped hydroxyapatite nanorods: Characterization, gamma absorption coefficient, and bioactivity

作者：Abutalib M M; Yahia I S^*

来源：Materials Science & Engineering C-Materials for Biological Applications, 2017, 78: 1093-1100.

DOI：10.1016/j.msec.2017.04.131

• Mo-doped HAp nanorods
• FTIR/Raman spectroscopy
• Dielectric properties
• Linear absorption coefficient and bioactivity

In the current work, the authors report the microwave-assisted synthesis Molybdenum-doped (from 0.05 to 5 wt) hydroxyapatite (HAp) for the first time. The morphology of Mo-doped HAp is nanorods of diameter in the range of 25-70 nm and length in the range of 25 nm to 200 nm. The good crystalline nature was confirmed from X-ray diffraction patterns and also lattice parameters, grain size, strain and dislocation density were determined. The crystallite size was found to be in the range 16 to 30 nm and crystallinity was found to be enhanced from 0.5 to 0.7 with doping. The field emission SEM micrographs show that the morphology of the synthesized nanostructures of pure and Mo-doped HAp are nanorods of few nanometers. The vibrational modes were identified using the FT-Raman and FT-IR spectroscopy. The dielectric properties were studied and the AC electrical conductivity was found to be increased with increasing the concentration of Mo ions doping in HAp. Moreover, antimicrobial studies were also carried out to understand the anti-bacterial and anti-fungi properties. The results suggest that it may be a good bio-ceramics material for bio-medical applications. Mo-doped HAp was subjected to the gamma irradiation produced from Cs-137 (662 keV) and its related parameters such as linear absorption coefficient, the half-value layer (HVL) and the tenth value layer TVL were calculated and analyzed.

• 出版日期2017-9-1