Abstract
Hydroxyapatite (HA) is widely used as a bone and dental substitute material due to its biocompatible and bioactive nature. Improvements in HA can be achieved by substituting various ions that are present in the bone. The present study of co-substitution of Zinc and Fluorine in HA was intended to investigate the influence of substituent ions on the structural, thermal, and bioactive behavior of HA. The co-substituted hydroxyapatite nanopowder was synthesized by water-based sol-gel method. Characterization studies from XRD, FTIR and TEM confirmed the substitution of Zn and F ions in HA and the formation of nanorods. The thermal stability of as-synthesized nanopowder was assessed by calcining it at three different temperatures i.e. 800 °C, 1000 °C and 1200 °C. The bioactivity of as-synthesized and calcined nanopowders was assessed by measuring the change in pH of simulated body fluid (SBF) and FTIR spectra after immersion in SBF for 30 days. The results revealed the bioactive behavior of as-synthesized and calcined nanopowders.
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