Preparation, characterization and bioactivity evaluation of sol- gel bioactive glass nano powder with three different compositions

The aim of this work was preparation، characterization and bioactivity evaluation of bioactive glass Nanopowder with three different compositions (58S، 63S، and 72S) by sol–gel technique. TEOS، TEP and Ca (NO3) 2. 4H2O were used as precursors. The prepared bioactive glass nanopowders were immersed in the simulated body fluid (SBF) solution at 37 ºC for 7 and 30 days. Scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) was utilized to recognize and confirm of the formation of apatite layer on prepared bioactive glass nanopowders. Characterization techniques such as XRD، XRF and TEM were used to investigate the microstructure، composition and morphology of nanopowders. XRD patterns showed that the prepared bioactive glass nanopowders were amorphous.