Please use this identifier to cite or link to this item:
|Title:||Synthesis and characterization of silver/silicon-cosubstituted nanohydroxyapatite|
|Citation:||Lim, P.N., Tay, B.Y., Chan, C.M., Thian, E.S. (2012-01). Synthesis and characterization of silver/silicon-cosubstituted nanohydroxyapatite. Journal of Biomedical Materials Research - Part B Applied Biomaterials 100 B (1) : 285-291. ScholarBank@NUS Repository. https://doi.org/10.1002/jbm.b.31951|
|Abstract:||Favorable cell-material interaction and the absence of undesirable reaction from the host body defence system play a critical role in determining the success and long-term survival of the implants. Substitution of various elements into hydroxyapatite (HA) has been done to alter its chemical composition, thereby mimicking that of the bone mineral. In this study, a cosubstituted nanosized apatite (Ag/Si-HA) containing Ag (0.3 wt %) and Si (0.8 wt %) was synthesized by an aqueous precipitation technique. The synthesized Ag/Si-HA displayed a rod-like morphology of dimensions ∼50 nm in length and ∼15 nm in width, as observed from the transmission electron microscope image. With an increase in temperature, the aspect ratio of nanosized Ag/Si-HA decreased, whilst the size increased. Autoclaving was used to achieve sufficient crystallinity while maintaining the rod-like morphology and size that were comparable to that of the bone apatite. A pure Ag/Si-HA was produced without any undesirable secondary phases, as evidenced from the X-ray diffraction and thermal gravimetric results. The Ag/Si cosubstitution affected the lattice cell parameters, in particularly the a- and c- axes which further led to an expansion of the unit cell volume. In addition, the relative intensity of the hydroxyl vibrational bands was reduced. These results demonstrated that a stable phase-pure Ag/Si-HA was produced using an aqueous precipitation reaction. © 2011 Wiley Periodicals, Inc.|
|Source Title:||Journal of Biomedical Materials Research - Part B Applied Biomaterials|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Aug 17, 2018
WEB OF SCIENCETM
checked on Aug 1, 2018
checked on Jun 29, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.