Sol–gel synthesis and characterization of unexpected rod-like crystal fibers based on SiO2–(1-x)CaO–xSrO–P2O5 dried-gel

Bioactive glass prepared by sol–gel emulsion

“…2 shows the mid-infrared spectra of the BG samples stabilized at 600 and 750°C. The bands centered at 1420, 1470, and 1520 cm −1 in the E600 sample can be assigned to asymmetric stretching of (CO 3 ) 2− groups, which are residual carbonates inherent to the sol-gel reaction [8]. In contrast, the E750 sample did not exhibit these bands, since the carbonates were removed during the stabilization procedure.…”

“…All infrared spectra displayed a broad band spanning between 850 and 1300 cm −1 , which was composed of bands located at about 1230, 1070 and 1038 cm −1 assigned to the Si-O-Si stretching mode; and a band centered at 935 cm −1 corresponding to the vibrational mode of stretching of Si-O-NBO [8]. Absorption bands in the 900-970 and 1000-1100 cm −1 range have also been associated with stretching vibrations of PO 4 3− groups, so that, despite the low concentration of phosphates in the glass matrix, their role is not ruled out [8].…”

“…Absorption bands in the 900-970 and 1000-1100 cm −1 range have also been associated with stretching vibrations of PO 4 3− groups, so that, despite the low concentration of phosphates in the glass matrix, their role is not ruled out [8]. Fig.…”

“…Silicate glasses prepared by sol-gel show promise for use as biomaterials, since the sol-gel method is able to provide highly pure and chemically homogeneous materials with a large surface area at low temperature [8]. Hybrid materials incorporating functional organic molecules can also be produced by sol-gel routes [9].…”

Multilayer bioactive glass/zirconium titanate thin films in bone tissue engineering and regenerative dentistry

“…Additionally, a natural polymer, carboxymethyl cellulose, was used to improve the dispersion of the synthesized nanoparticles in the aqueous sol. 16 for a basic 58S bioactive glass. An anitric acid (HCl: HNO 3 ) solution was used as the catalyst for the hydrolysis and condensation reactions.…”